How to calculate different base and different index Rt. Urgent It's multiplication

How to calculate different base and different index Rt. Urgent It's multiplication

The same index with different bases
5^10 * 6^10 = (5*6)^10=30^10
With the same base and different indexes:
5^6 * 5^7 = 5^(6+7) = 5^13
Different base and different index
5^6 * 7^10
Can only put still, or hard calculation