This is correct and can be used in written English.
For example: The total cost of the project is calculated by multiplying the cost of materials by the number of hours of labor.
An index is calculated by multiplying the scores per factor.
The retail price of most designer jeans is calculated by multiplying the wholesale cost by 2.2.
It is calculated by multiplying the number of a company's U.S. patents by its Current Impact Index (see below).
Tuition is calculated by multiplying the number of credits you anticipate enrolling in by the 2017-18 per credit charge.
Whereafter, the initial guess is calculated by multiplying the predicted relative velocity field by the roll speed.
Revpar is calculated by multiplying a hotel's average daily room price by its occupancy rate, and measures its earnings per room.
Areal change rate is calculated by multiplying the length of the section with the mean of the shoreline change trends of all transects in the relevant coastal stretch.
Grade point average is calculated by multiplying the credit hour and quality point equivalent for each course and then dividing by the total number of credits taken.
The soil loss from footpaths and unpaved roads is calculated by multiplying the total length of footpaths and unpaved roads with the average width and soil loss depth.
In a statement, Gimps said: "The prime number, also known as M74207281, is calculated by multiplying together 74,207,281 twos then subtracting one.
The lens size is calculated by multiplying the "throw" (distance from lens to screen) by the width of the aperture and dividing the total by the picture width.
