12385639 ÷ 121 
We're looking to find how many times 121 goes into 12385639.

Let's proceed to step 1:
121 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 121

Going ahead to step 2:
If we divide 12 by 121, we get 0 and a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 121

Going ahead to step 3:
When dividing 123 by 121, we get 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 121 from 123 and we're left with 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 121

Moving on to step 4:
When dividing 28 by 121, we get 0 with a remainder of 28.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 28 after subtracting 0 from 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 121

On to step 5:
285 divided by 121 is 2 with a remainder of 43.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
Subtract 242 from 285 to get 43.
Grab the next digit (6) from the dividend, add it to 43, then carry on: 436 / 121

Moving on to step 6:
When dividing 436 by 121, we get 3 with a remainder of 73.
The next digit of our result is 3. 
Result so far: 1023.0
Subtract 363 from 436 to get 73.
Take the next digit (3) from the dividend and append it to 73, then repeat: 733 / 121

Step 7:
If we divide 733 by 121, we get 6 and a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 10236.0
If we subtract 726 from 733, we get 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 121

Advancing to step 8:
121 can be fit into 79 0 times, resulting in a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 102360.0
Subtract 0 from 79 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 9:
When dividing 790 by 121, we get 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 102360.6
Subtract 726 from 790 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 10:
121 can be fit into 640 5 times, resulting in a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 102360.65
Deduct 605 from 640 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 11:
350 divided by 121 is 2 with a remainder of 108.
Write down 2 as next digit of the result. 
Result so far: 102360.652
Subtract 242 from 350 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Moving on to step 12:
When dividing 1080 by 121, we get 8 with a remainder of 112.
The next digit of our result is 8. 
Result so far: 102360.6528
Deduct 968 from 1080 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Moving on to step 13:
The number 121 fits into 1120 9 times, leaving a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 102360.65289
If we take 1089 away from 1120, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 14:
310 divided by 121 is 2 with a remainder of 68.
The next digit of our result is 2. 
Result so far: 102360.652892
Subtract 242 from 310 to 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.

Moving on to step 15:
When dividing 680 by 121, we get 5 with a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 102360.6528925
Subtracting 605 from 680 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 16:
When dividing 750 by 121, we get 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 102360.65289256
If we take 726 away from 750, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Our division results in 102360.65289256 with a remaining 2.4e-08.