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UniqueUnicorn8

You would multiply the amount by 1.54. Hope this helped :3
If the multiplier was 1.54, then you would get more then 1 and a half times your original amount.

Do 100% + 5.4% to get 105.4%.
Turn this into a whole number (divide by 100) to get 1.054 as your multiplier.
1.054
good job