Problem $7\mathrm{.}3$ Calculating Break$-$Even

In each of the following cases, find the unknown variable. Ignore toxes. $($Do not round intermedlate calculations and round your answers to the nearest whole number, e$.$g$.,32.)$

$\backslash$table$[[$Accounting Brealk$-$Even,Unit Price,Unit Variable Cost,Fixed Costs,Depreciation$],[57,500,$$ $38,$$ $18,$$ $850,000,],[156,000,,38,3,800,000,890,000],[6\mathrm{.}800,80,,260,000,80,000]]$