You are making a spreadsheet to estimate the cost of raw materials for operating five different injection molding machines over the course of a week. The number of kilograms of raw materials required for each day on each machine has been forecast based on production requirements. The cost per kg of raw material changes from day$-$to$-$day.

Create a formula that can be used in the Machine $1$ column of the Raw Material Cost row that finds the total cost of the raw material for the week for each machine. Your formula should use absolute referencing where appropriate to allow a single formula to be copied to all $5$ cells.

Write your formula in the blank below