12507 ÷ 8 = 1563 R3
Alright, let's work through the division of 12507 by 8 step by step.

Step 1:
8 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 1 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 8

Step 2:
8 goes into 12 1 times with a remainder of 4.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 8 from 12 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 8

Step 3:
8 goes into 45 5 times with a remainder of 5.
Write down 5 as next digit of of the result. 
Result so far: 15
Subtract 40 from 45 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 8

Step 4:
8 goes into 50 6 times with a remainder of 2.
Write down 6 as next digit of of the result. 
Result so far: 156
Subtract 48 from 50 to get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 8

Step 5:
8 goes into 27 3 times with a remainder of 3.
Write down 3 as next digit of of the result. 
Result so far: 1563
Subtract 24 from 27 to get 3.

The final result is 1563 with a remainder of 3.