12136991 ÷ 216 
We're looking to find how many times 216 goes into 12136991.

Let's proceed to step 1:
1 divided by 216 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 216

Step 2:
When dividing 12 by 216, we get 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 216

Advancing to step 3:
216 can be fit into 121 0 times, resulting in a remainder of 121.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 121 and we're left with 121.
Take the next digit (3) from the dividend and append it to 121, then repeat: 1213 / 216

Moving on to step 4:
1213 divided by 216 is 5 with a remainder of 133.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 1080 from 1213 and we're left with 133.
Bring next digit (6) of the dividend behind the 133 and repeat the process: 1336 / 216

Going ahead to step 5:
When dividing 1336 by 216, we get 6 with a remainder of 40.
Write down 6 as next digit of the result. 
Result so far: 56.0
If we subtract 1296 from 1336, we get 40.
Take the next digit (9) from the dividend and append it to 40, then repeat: 409 / 216

Going ahead to step 6:
The number 216 fits into 409 1 times, leaving a remainder of 193.
Record the quotient 1 as the next digit in the result. 
Result so far: 561.0
If we subtract 216 from 409, we get 193.
Grab the next digit (9) from the dividend, add it to 193, then carry on: 1939 / 216

Let's proceed to step 7:
The number 216 fits into 1939 8 times, leaving a remainder of 211.
Write down 8 as next digit of the result. 
Result so far: 5618.0
Subtracting 1728 from 1939 leaves us with 211.
Bring next digit (1) of the dividend behind the 211 and repeat the process: 2111 / 216

On to step 8:
When dividing 2111 by 216, we get 9 with a remainder of 167.
Record the quotient 9 as the next digit in the result. 
Result so far: 56189.0
Deduct 1944 from 2111 and we're left with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Moving on to step 9:
216 can be fit into 1670 7 times, resulting in a remainder of 158.
The number 7 becomes the next digit in our result. 
Result so far: 56189.7
Subtracting 1512 from 1670 leaves us with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Advancing to step 10:
The number 216 fits into 1580 7 times, leaving a remainder of 68.
Put 7 as the next digit of the answer. 
Result so far: 56189.77
If we subtract 1512 from 1580, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

After the division, we end up with 56189.77 and a remainder of 0.068.