Convert the base-ten number to a number in the indicated base.

12 to base six. I have no clue how to even do this. Help please?

Divide the number by 6 repeatedly until no remainder remains.

The final quotient together with the successive remainders is the number in base 6.

Example:

Convert 256 to base 6:

256/6=42 R4
42/6=7 R0
So the base 6 number is 704

Convert 15203 to base 6:
15203/6=2533 R5
2533/6=422 R1
422/6=70 R2
70/6=11 R4
11/6=1 R5
The base 6 number is 154215

Just in case you need to know, to convert 154215(base 6) to base 10:
((((6*1+5)*6+4)*6+2)*6+1)*6+5=15203