How do Chest Hunt soul bonuses work?

[RAD-82]

I can't really tell if something is additive or multiplicative unless I'm able to observe the difference, and with these bonuses, I didn't observe the effect from the upgrades because I just bought all of the ascension upgrades when the update came.

Super Chest Souls - Increase Chest Hunt Souls by 250%
Mega Chest Souls - Increase Chest Hunt Souls by 250%
Master Chest Souls - Increase Chest Hunt Souls by 175%

Divine Chest Souls - Increase Chest Hunt Souls by 100%

My main concern is that Divine Chest Souls costs 375 Divinity Points. If that is multiplicative, then that just doubles the souls gained, but if it is additive with the other upgrades, then I feel like the DP cost doesn't justify the effect, which I calculated to be about a 13% increase. (8.75 / 7.75 = 1.129....) A 13% boost for 375 DP doesn't sound worth it. Regardless of whether or not the ascension upgrades are additive or multiplicative, I feel that the divinity upgrade should be multiplicative for that much DP.

Comparing just the ascension upgrades; additive vs multiplicative
+675% (7.75x) vs +3268.75% (33.6875x)

Multiplicative is about 4.3x the value of additive, and I have no idea which one is being used ingame. I'm not going to concern myself with the current balance of those ascension upgrades since other people already seem to be complaining that the chest hunt doesn't give enough rewards to be worth the time. It feels okay to me, but it certainly doesn't compare to a bonus stage. I just wanted to see what kind of difference the divinity upgrade would do if it is additive instead of multiplicative.

I don't have extra DP to be using on the divinity, and I'm not quite ready for my next Ultra Ascension to test the ascension upgrades, so I'm asking now rather than waiting for a time when I can answer it myself.

[RAD-82]

引用自 Faerador：

It's disappointing to spend 1 BILLION SP on an upgrade that increases your CpS by about 7% in real effect.

I'm pretty sure that is a 22.2(repeating)% CpS increase, not 7%.

Ascension CpS starts out at 100%, Ancient Slayer adds 250%, Soul Amulet adds 100%, and Astral Slayer adds 100%. Divide the new value (550%) with the previous value (450%) to see the increase.

[RAD-82]

Short Answer: Multiplicative; Divine Chest Souls doubles the chest hunt souls

Long Answer:
I'm still about 600+ million SP away from where I can test the ascension upgrades on my next ultra ascension, so that still hasn't happened yet. Last week, I made a video for my 100th day of Idle Slayer, but to make that video, I needed to copy my save onto a different computer to make the recording. I finally realized I could go use that copy of my save to test the divinity and it doubled my soul gain in the chest hunt.