14243 ÷ 8 = 1780 R3
Let's divide 14243 by 8.

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 (4) of the dividend behind the 1 and repeat the process: 14 / 8

Step 2:
8 goes into 14 1 times with a remainder of 6.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 8 from 14 to get 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 8

Step 3:
8 goes into 62 7 times with a remainder of 6.
Write down 7 as next digit of of the result. 
Result so far: 17
Subtract 56 from 62 to get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 8

Step 4:
8 goes into 64 8 times with a remainder of 0.
Write down 8 as next digit of of the result. 
Result so far: 178
Subtract 64 from 64 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 8

Step 5:
8 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of of the result. 
Result so far: 1780
Subtract 0 from 3 to get 3.

The final result is 1780 with a remainder of 3.