place values
1: hundreds
7: tens
0: ones
.
3: tenths
6: hundredths
6: thousandths.
As you are finding nearest hundredths, look at the thousandths place. If it is 5 and greater (as in this case), round up, if less than 5, round down. Add 1 to the hundredths place
170.37 is your answer
hope this helps