Given the task definition and input, reply with output. You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

to add support on the house 's connections he decided to tie the wood joints with rope . he needs 185 feet of rope . if he has 46 feet of rope with him and at the moment he only needed 57 feet how many feet of rope did his friends give to him ?

82