Grawburg Incorporated maintains a call center to take orders, answer questions, and handle complaints. The costs of the call center for a number of recent months are listed below:

$\backslash$table$[[,\backslash$table$[[$Calls$],[$Taken$]],$Call,Center Cost$],[$April$,4,850,,$$ $84,367],[$May$,4,819,,$$ $84,185],[$June$,4,860,,$$ $84,430],[$July$,4,854,,$$ $84,359],[$August$,4,820,,$$ $84,172],[$September$,4,834,,$$ $84,250],[$October$,4,880,,$$ $84,537],[$November$,4,867,,$$ $84,475]]$

Management believes that the cost of the call center is a mixed cost that depends on the number of calls taken.

Required:

Estimate the variable cost per call and fixed cost per month using the least$-$squares regression method.

Note: Round the "Variable cost" to $2$ decimal places and the "Fixed cost" to the nearest dollar amount.

$\backslash$table$[[$Variable cost$,$per call$],[$Fixed cost$,$per month$]]$