We divide 18721517 by 121
Our goal is to divide 18721517 by 121.

Let's proceed to step 1:
If we divide 1 by 121, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 121

Advancing to step 2:
When dividing 18 by 121, we get 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 121

On to step 3:
121 goes into 187 1 times with a remainder of 66.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 121 from 187, we get 66.
Append the next digit (2) from the dividend to 66 and continue with: 662 / 121

Moving on to step 4:
662 divided by 121 is 5 with a remainder of 57.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 605 away from 662, we end up with 57.
Bring next digit (1) of the dividend behind the 57 and repeat the process: 571 / 121

On to step 5:
The number 121 fits into 571 4 times, leaving a remainder of 87.
Put 4 as the next digit of the answer. 
Result so far: 154.0
Subtract 484 from 571 to get 87.
Fetch the next digit (5) from the dividend, attach it to 87 and continue: 875 / 121

Going ahead to step 6:
When dividing 875 by 121, we get 7 with a remainder of 28.
Put 7 as the next digit of the answer. 
Result so far: 1547.0
If we take 847 away from 875, we end up with 28.
Grab the next digit (1) from the dividend, add it to 28, then carry on: 281 / 121

On to step 7:
121 goes into 281 2 times with a remainder of 39.
Write down 2 as next digit of the result. 
Result so far: 15472.0
If we take 242 away from 281, we end up with 39.
Include the next digit (7) from the dividend after 39, then repeat: 397 / 121

On to step 8:
121 goes into 397 3 times with a remainder of 34.
The next digit of our result is 3. 
Result so far: 154723.0
If we take 363 away from 397, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 9:
The number 121 fits into 340 2 times, leaving a remainder of 98.
Use 2 as the next digit of our solution. 
Result so far: 154723.2
Subtracting 242 from 340 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Advancing to step 10:
121 goes into 980 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 154723.28
If we subtract 968 from 980, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
121 can be fit into 120 0 times, resulting in a remainder of 120.
Use 0 as the next digit of our solution. 
Result so far: 154723.28
Subtracting 0 from 120 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 12:
The number 121 fits into 1200 9 times, leaving a remainder of 111.
The next digit of our result is 9. 
Result so far: 154723.2809
Deduct 1089 from 1200 and we're left with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Let's proceed to step 13:
The number 121 fits into 1110 9 times, leaving a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 154723.28099
The remainder is 21 after subtracting 1089 from 1110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final outcome is 154723.28099, with a leftover of 2.1e-05.