SAT Question 96c3e32d: Ratios Rates Proportional Relationships And Units answer and explanation with Desmos solution

It's given that one side of a flat board has an area of $874$ square inches. If a pressure of $19$ pounds per square inch of area is exerted on this side of the board, the total force exerted on this side of the board is $\left(874\text{square inches}\right)\left(\frac{19\text{pounds}}{1\text{square inch}}\right)$, or $16,606$ pounds.