Answer:
72
Step-by-step explanation:
You line up the decimal places (and remember 12 can look like 12.0)
Your final answer should equal the sum of 72.
23.3+12=(23+12=35)(35+.3=35.3) 35.3
35+36=71
.3+.7(from 36.7)=1
71+1=72
