solve this with explanation please

Question 1: Suppose that input to a process is 1,000 units at a cost of $6,300. Normal loss is 10% and there are no opening or closing stocks, Determine the accounting entries for the cost of output and the cost of the loss if actual output were as follows 840 units (so that actual loss is 160 units) a) calculate the cost of the output. b) calculate the cost of the loss