41212510 ÷ 121 
Our goal is to divide 41212510 by 121.

Let's proceed to step 1:
4 divided by 121 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 121

Let's proceed to step 2:
The number 121 fits into 41 0 times, leaving a remainder of 41.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 41 and we're left with 41.
Append the next digit (2) from the dividend to 41 and continue with: 412 / 121

Moving on to step 3:
The number 121 fits into 412 3 times, leaving a remainder of 49.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 363 from 412, we get 49.
Fetch the next digit (1) from the dividend, attach it to 49 and continue: 491 / 121

On to step 4:
121 goes into 491 4 times with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 34.0
Deduct 484 from 491 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 121

On to step 5:
When dividing 72 by 121, we get 0 with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 340.0
The remainder is 72 after subtracting 0 from 72.
Include the next digit (5) from the dividend after 72, then repeat: 725 / 121

Step 6:
The number 121 fits into 725 5 times, leaving a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 3405.0
If we take 605 away from 725, we end up with 120.
Fetch the next digit (1) from the dividend, attach it to 120 and continue: 1201 / 121

On to step 7:
121 goes into 1201 9 times with a remainder of 112.
Record the quotient 9 as the next digit in the result. 
Result so far: 34059.0
Deduct 1089 from 1201 and we're left with 112.
Fetch the next digit (0) from the dividend, attach it to 112 and continue: 1120 / 121

Step 8:
The number 121 fits into 1120 9 times, leaving a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 340599.0
Subtracting 1089 from 1120 leaves us 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.

Step 9:
The number 121 fits into 310 2 times, leaving a remainder of 68.
The next digit of our result is 2. 
Result so far: 340599.2
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.

Advancing to step 10:
If we divide 680 by 121, we get 5 and a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 340599.25
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 11:
When dividing 750 by 121, we get 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 340599.256
If we subtract 726 from 750, we get 24.
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 12:
If we divide 240 by 121, we get 1 and a remainder of 119.
Record the quotient 1 as the next digit in the result. 
Result so far: 340599.2561
If we subtract 121 from 240, we get 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Let's proceed to step 13:
The number 121 fits into 1190 9 times, leaving a remainder of 101.
Use 9 as the next digit of our solution. 
Result so far: 340599.25619
Subtract 1089 from 1190 to 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 14:
1010 divided by 121 is 8 with a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 340599.256198
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.

Going ahead to step 15:
121 can be fit into 420 3 times, resulting in a remainder of 57.
Put 3 as the next digit of the answer. 
Result so far: 340599.2561983
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 16:
If we divide 570 by 121, we get 4 and a remainder of 86.
Record the quotient 4 as the next digit in the result. 
Result so far: 340599.25619834
If we take 484 away from 570, we end up 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.

After the division, we end up with 340599.25619834 and a remainder of 8.6e-08.