To convert millimeters to centimeters, you can use the conversion factor that 1 centimeter (cm) is equal to 10 millimeters (mm).
Given that you have 98,850 millimeters, the conversion to centimeters is done as follows:
\[ \text{centimeters} = \frac{\text{millimeters}}{10} \]
\[ \text{centimeters} = \frac{98,850 \text{ mm}}{10} = 9,885 \text{ cm} \]
Now, if you want to express this value in terms of "centimeters per year," it would depend on how you define "month." If we assume a standard month of roughly 30 days, there are about 12 months in a year, so the following calculation can be made.
\[ \text{centimeters per year} = \text{total centimeters} \times 12 \]
Assuming your original figure (98,850 mm) represents a monthly amount, we convert this to a yearly amount by multiplying by the number of months in a year.
\[ \text{centimeters per year} = 9,885 \text{ cm/month} \times 12 \text{ months/year} \]
\[ \text{centimeters per year} = 118,620 \text{ cm/year} \]
So, 98,850 millimeters per month translates to 118,620 centimeters per year.