We divide 121206 by 72
We're looking to find how many times 72 goes into 121206.

Going ahead to step 1:
When dividing 1 by 72, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 72

On to step 2:
72 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 72

Advancing to step 3:
The number 72 fits into 121 1 times, leaving a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 72 from 121 to get 49.
Include the next digit (2) from the dividend after 49, then repeat: 492 / 72

Step 4:
72 goes into 492 6 times with a remainder of 60.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 60 after subtracting 432 from 492.
Bring next digit (0) of the dividend behind the 60 and repeat the process: 600 / 72

Advancing to step 5:
If we divide 600 by 72, we get 8 and a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 168.0
If we subtract 576 from 600, we get 24.
Include the next digit (6) from the dividend after 24, then repeat: 246 / 72

On to step 6:
72 can be fit into 246 3 times, resulting in a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 1683.0
Deduct 216 from 246 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 7:
The number 72 fits into 300 4 times, leaving a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 1683.4
Subtracting 288 from 300 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
72 goes into 120 1 times with a remainder of 48.
Write down 1 as next digit of the result. 
Result so far: 1683.41
Subtract 72 from 120 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
72 can be fit into 480 6 times, resulting in a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 1683.416
Subtract 432 from 480 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 10:
The number 72 fits into 480 6 times, leaving a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 1683.4166
If we subtract 432 from 480, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 1683.4166 with a remainder of 0.00048.