@Nakanowatari Using the example of entering 20,000 instead of 2,000
2,000 can also be seen as 10% of 20,000
With the difference between them being 18,000 which can be seen as 90% of 20,000
90% is basically nine x 10%
So dividing the 18,000 (90%) by 9 shows you what 10% is, the 2,000 that should...