Explanation:
the mileage cost is the number of miles times the rate per mile.
240 × 0.62 = $148.80
180 × 0.62 = $111.60
270 × 0.62 = $167.40
580 × 0.62 = $359.60
47 × 0.62 = $29.14
1323 × 0.62 = $820.26
this you put into the "Mileage" column.
and the total expenses on the right is the sum of all $- amounts in the same line.
I don't think I have to do this trivial calculation.