53721681 divided by 121 
We're looking to find how many times 121 goes into 53721681.

Let's proceed to step 1:
If we divide 5 by 121, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 121

Step 2:
121 goes into 53 0 times with a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Bring next digit (7) of the dividend behind the 53 and repeat the process: 537 / 121

Step 3:
121 can be fit into 537 4 times, resulting in a remainder of 53.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 484 from 537 to get 53.
Fetch the next digit (2) from the dividend, attach it to 53 and continue: 532 / 121

Moving on to step 4:
If we divide 532 by 121, we get 4 and a remainder of 48.
The next digit of our result is 4. 
Result so far: 44.0
If we take 484 away from 532, we end up with 48.
Append the next digit (1) from the dividend to 48 and continue with: 481 / 121

Let's proceed to step 5:
The number 121 fits into 481 3 times, leaving a remainder of 118.
Use 3 as the next digit of our solution. 
Result so far: 443.0
The remainder is 118 after subtracting 363 from 481.
Append the next digit (6) from the dividend to 118 and continue with: 1186 / 121

Let's proceed to step 6:
121 goes into 1186 9 times with a remainder of 97.
Write down 9 as next digit of the result. 
Result so far: 4439.0
If we take 1089 away from 1186, we end up with 97.
Grab the next digit (8) from the dividend, add it to 97, then carry on: 978 / 121

Going ahead to step 7:
If we divide 978 by 121, we get 8 and a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 44398.0
Deduct 968 from 978 and we're left with 10.
Bring next digit (1) of the dividend behind the 10 and repeat the process: 101 / 121

Step 8:
121 can be fit into 101 0 times, resulting in a remainder of 101.
Put 0 as the next digit of the answer. 
Result so far: 443980.0
If we subtract 0 from 101, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Step 9:
121 goes into 1010 8 times with a remainder of 42.
The next digit of our result is 8. 
Result so far: 443980.8
If we take 968 away from 1010, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
121 can be fit into 420 3 times, resulting in a remainder of 57.
Write down 3 as next digit of the result. 
Result so far: 443980.83
If we take 363 away from 420, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 11:
121 can be fit into 570 4 times, resulting in a remainder of 86.
Use 4 as the next digit of our solution. 
Result so far: 443980.834
The remainder is 86 after subtracting 484 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 12:
If we divide 860 by 121, we get 7 and a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 443980.8347
If we take 847 away from 860, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 13:
121 can be fit into 130 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 443980.83471
The remainder is 9 after subtracting 121 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 14:
The number 121 fits into 90 0 times, leaving a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 443980.83471
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 15:
900 divided by 121 is 7 with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 443980.8347107
Subtract 847 from 900 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 16:
The number 121 fits into 530 4 times, leaving a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 443980.83471074
The remainder is 46 after subtracting 484 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

In conclusion, the division gives 443980.83471074 with a balance of 4.6e-08.