To round to the nearest place value column, use the next place value column to decide whether to round up or down.
To round to the nearest hundredth (2 digits after the decimal point) use the thousandth place value column digit (3rd digit after the decimal point); for 18.194 it is 4, which is less than 5, so round down:
18.194 → 18.19 to the nearest hundredth.
18.19
It then is 16.11 rounded to the nearest hundredth
16.64
0.09
1.54
12.04
It is 1.54 rounded to the nearest hundredth
It then is 16.11 rounded to the nearest hundredth
It is already to the nearest hundredth as 9.69
16.64
0.09
1.54
12.04
0.61
2.81
66.33
1.24
74.01