Im trying to understand how this answer is correct when the cost that needs to be found is Sales, not marketing. If someone could explain the reasoning to this answer I would greatly appreciate it$.$

Better Health Company has two service departments $$ actuarial and premium rating, and two operations departments $$ marketing and sales. The distribution of each service department's efforts to the other departments is shown below:$$

The direct operating costs of the departments $($including both variable and fixed costs$)$ were as follows:$$The total cost accumulated in the sales department using the step method is $($calculate all ratios and percentages to $4$ decimal places, for example $33\mathrm{.}3333\%,$ and round all dollar amounts to the nearest whole dollar; assume that the actuarial department goes first$)$:Multiple Choice$$98,600.$$$102,600.$$$124,400.$$$128,400.$$$133,400.$