Samantha wants to put a fence around her backyard. She buys the fence in 6-foot sections and needs 12 sections. She spends a total of $850 on fencing.
 Choose the words or phrases that complete the steps required to calculate the cost of 1 foot of fencing.
 Samantha buys a total of ft of fencing.
 To find the cost of fencing per foot, $850 by .