Using the digits 1 to 9, at most one time each, place a digit in each box to make a whole number.

Some possible solutions are:
2/1 * 6/3 = 4
2/3 * 6/1 = 4
2/4 * 6/3 = 1
4/2 * 3/6 = 1
6/2 * 3/9 = 1
2/6 * 9/3 = 1
4/6 * 9/3 = 2
6/4 * 3/9 = 2
8/4 * 3/6 = 1
4/8 * 6/3 = 1

Please let me know if you find more 🙂