Answer:
1.56
Explanation:
If you were trying to make your equation look like (2.6/13)7.8 , then the answer would be 1.56.
2.6 * 7.8 = 20.28
20.28 / 13 = 1.56
If you were trying to make you equation look like 2.6/137.8 , then the answer would be 0.01886792452