I will help you get started. Use 0.33 for one third. Then calculate 50 divided by 0.33 for your answer.
400
25
2.0833
0.0714
50
One third divided by two and one third = 1/7
3.3333
760 divided into 50 = 15.2
50 divided by 25,000 = 0.002
100 divided by two will be 50.
350 divided to 50 = 7