10. Compute the monthly cost of gas. a. In cell C21, enter a formula to calculate the number of miles you expect to drive each month. Divide the value of number of miles (cell A5 from the Data sheet) by the average M'PG for the vehicle multiplied by the price of a gallon of gas (cell A6 from the Data sheet). b. Copy the formula to the appropriate cells for the other vehicles. c. If cells D21:F21 display an error or a value of 05 display formulas and check for errors. (I. If you still can't nd the error, try displaying the precedent arrows. e. Hirer: The references to the cells on the Data sheet should use absolute references. If they do not, the formula will update incorrectly when you copy it across the row