51545003 ÷ 412 
Our goal is to divide 51545003 by 412.

On to step 1:
412 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 412

On to step 2:
412 can be fit into 51 0 times, resulting in a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Grab the next digit (5) from the dividend, add it to 51, then carry on: 515 / 412

Step 3:
When dividing 515 by 412, we get 1 with a remainder of 103.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 412 away from 515, we end up with 103.
Grab the next digit (4) from the dividend, add it to 103, then carry on: 1034 / 412

Step 4:
If we divide 1034 by 412, we get 2 and a remainder of 210.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 824 from 1034 and we're left with 210.
Take the next digit (5) from the dividend and append it to 210, then repeat: 2105 / 412

Let's proceed to step 5:
When dividing 2105 by 412, we get 5 with a remainder of 45.
The next digit of our result is 5. 
Result so far: 125.0
Deduct 2060 from 2105 and we're left with 45.
Fetch the next digit (0) from the dividend, attach it to 45 and continue: 450 / 412

On to step 6:
450 divided by 412 is 1 with a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 1251.0
Deduct 412 from 450 and we're left with 38.
Include the next digit (0) from the dividend after 38, then repeat: 380 / 412

Step 7:
412 goes into 380 0 times with a remainder of 380.
Write down 0 as next digit of the result. 
Result so far: 12510.0
Subtract 0 from 380 to get 380.
Include the next digit (3) from the dividend after 380, then repeat: 3803 / 412

Moving on to step 8:
412 goes into 3803 9 times with a remainder of 95.
The next digit of our result is 9. 
Result so far: 125109.0
Subtracting 3708 from 3803 leaves us with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Step 9:
The number 412 fits into 950 2 times, leaving a remainder of 126.
The number 2 becomes the next digit in our result. 
Result so far: 125109.2
The remainder is 126 after subtracting 824 from 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Step 10:
412 goes into 1260 3 times with a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 125109.23
The remainder is 24 after subtracting 1236 from 1260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
The number 412 fits into 240 0 times, leaving a remainder of 240.
Record the quotient 0 as the next digit in the result. 
Result so far: 125109.23
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 12:
The number 412 fits into 2400 5 times, leaving a remainder of 340.
The next digit of our result is 5. 
Result so far: 125109.2305
If we take 2060 away from 2400, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Moving on to step 13:
3400 divided by 412 is 8 with a remainder of 104.
Put 8 as the next digit of the answer. 
Result so far: 125109.23058
If we subtract 3296 from 3400, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Going ahead to step 14:
412 can be fit into 1040 2 times, resulting in a remainder of 216.
Use 2 as the next digit of our solution. 
Result so far: 125109.230582
The remainder is 216 after subtracting 824 from 1040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Advancing to step 15:
When dividing 2160 by 412, we get 5 with a remainder of 100.
Use 5 as the next digit of our solution. 
Result so far: 125109.2305825
If we take 2060 away from 2160, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 16:
1000 divided by 412 is 2 with a remainder of 176.
Write down 2 as next digit of the result. 
Result so far: 125109.23058252
Subtracting 824 from 1000 leaves us with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

The final result is 125109.23058252 with a remainder of 1.76e-07.