I will help you get started. Use 0.33 for one third. Then calculate 50 divided by 0.33 for your answer.
25
400
2.0833
50
50
0.0714
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.