what is equivelent to 4 ^30/ 4 ^6

If you dividing two numbers with exponets, and these numbers have the same base, (which is 4 here) you can subtract the exponets.

So, worked out, we have:

$$4^{30} \div 4^6$$

$$4^{30-6}$$

$$\mathbf{4^{24}}$$

The answer is 281474976710656