We're dividing 43451971 by 121 
Let's see how many times 121 fits into 43451971.

Let's proceed to step 1:
When dividing 4 by 121, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 121

On to step 2:
The number 121 fits into 43 0 times, leaving a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Grab the next digit (4) from the dividend, add it to 43, then carry on: 434 / 121

On to step 3:
121 goes into 434 3 times with a remainder of 71.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 363 from 434 to get 71.
Grab the next digit (5) from the dividend, add it to 71, then carry on: 715 / 121

Moving on to step 4:
If we divide 715 by 121, we get 5 and a remainder of 110.
The next digit of our result is 5. 
Result so far: 35.0
Subtract 605 from 715 to get 110.
Grab the next digit (1) from the dividend, add it to 110, then carry on: 1101 / 121

Moving on to step 5:
If we divide 1101 by 121, we get 9 and a remainder of 12.
The next digit of our result is 9. 
Result so far: 359.0
Subtracting 1089 from 1101 leaves us with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 121

Let's proceed to step 6:
When dividing 129 by 121, we get 1 with a remainder of 8.
The next digit of our result is 1. 
Result so far: 3591.0
The remainder is 8 after subtracting 121 from 129.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 121

Moving on to step 7:
121 goes into 87 0 times with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 35910.0
If we subtract 0 from 87, we get 87.
Bring next digit (1) of the dividend behind the 87 and repeat the process: 871 / 121

Going ahead to step 8:
The number 121 fits into 871 7 times, leaving a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 359107.0
The remainder is 24 after subtracting 847 from 871.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 9:
240 divided by 121 is 1 with a remainder of 119.
Put 1 as the next digit of the answer. 
Result so far: 359107.1
Deduct 121 from 240 and we're left with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Moving on to step 10:
The number 121 fits into 1190 9 times, leaving a remainder of 101.
Record the quotient 9 as the next digit in the result. 
Result so far: 359107.19
The remainder is 101 after subtracting 1089 from 1190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Let's proceed to step 11:
1010 divided by 121 is 8 with a remainder of 42.
The next digit of our result is 8. 
Result so far: 359107.198
Deduct 968 from 1010 and we're left 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 12:
420 divided by 121 is 3 with a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 359107.1983
Deduct 363 from 420 and we're left 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.

Moving on to step 13:
121 goes into 570 4 times with a remainder of 86.
The next digit of our result is 4. 
Result so far: 359107.19834
Deduct 484 from 570 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 14:
860 divided by 121 is 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 359107.198347
Deduct 847 from 860 and we're left 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 15:
121 can be fit into 130 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 359107.1983471
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.

Advancing to step 16:
121 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 359107.1983471
Deduct 0 from 90 and we're left 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.

The quotient of the division is 359107.1983471, and the remainder is 9e-08.