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Firstly we put the numbers that it told us (5) into the square. We then started working out the corners, we knew that 15 had to be made by multiplying 1,5 and 3, we discovered that 40 had to be made by multiplying 2,4 and 5, 80 had to be made by multiplying 4,4, and 5 and 18 had to be made by multiplying 3,3 and 2. We then fitted them into the grid like a sudoku puzzle, knowing that we had to have numbers 1-5 in every row, and filled in the gaps around the 5 in the middle, being careful not to have and overlap numbers in each row and column. For each number we made multiple combinations to make the number we had to make and we then tried different combinations until we came across something that did work. If we hadn’t done all of the separate parts separately then it would have been a lot harder.