It’s for a test pls help and explain :( no links !!

Answer: $0.25 increased
Step-by-step explanation:
get ready for this MEGA AMAZING ULTRA SWAG calculation bro.
whip out that calculator. alright ready?
do 0 + 1.50
now press equal sign.
okay now press — 3.375
press equal sign
now press + 0.625
press equal sign
now press + 1.5
what do you have?
0.25
its a POSITIVE number therefore it has increased