We look at the division of 75639451 by 520 
We're looking to find how many times 520 goes into 75639451.

Going ahead to step 1:
520 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 520

On to step 2:
520 can be fit into 75 0 times, resulting in a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Bring next digit (6) of the dividend behind the 75 and repeat the process: 756 / 520

Moving on to step 3:
If we divide 756 by 520, we get 1 and a remainder of 236.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 520 from 756 to get 236.
Include the next digit (3) from the dividend after 236, then repeat: 2363 / 520

Going ahead to step 4:
The number 520 fits into 2363 4 times, leaving a remainder of 283.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
The remainder is 283 after subtracting 2080 from 2363.
Take the next digit (9) from the dividend and append it to 283, then repeat: 2839 / 520

Step 5:
520 can be fit into 2839 5 times, resulting in a remainder of 239.
Write down 5 as next digit of the result. 
Result so far: 145.0
Subtract 2600 from 2839 to get 239.
Append the next digit (4) from the dividend to 239 and continue with: 2394 / 520

Advancing to step 6:
The number 520 fits into 2394 4 times, leaving a remainder of 314.
The next digit of our result is 4. 
Result so far: 1454.0
The remainder is 314 after subtracting 2080 from 2394.
Include the next digit (5) from the dividend after 314, then repeat: 3145 / 520

Moving on to step 7:
The number 520 fits into 3145 6 times, leaving a remainder of 25.
Use 6 as the next digit of our solution. 
Result so far: 14546.0
If we take 3120 away from 3145, we end up with 25.
Append the next digit (1) from the dividend to 25 and continue with: 251 / 520

Step 8:
When dividing 251 by 520, we get 0 with a remainder of 251.
The next digit of our result is 0. 
Result so far: 145460.0
Subtracting 0 from 251 leaves us with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Advancing to step 9:
520 goes into 2510 4 times with a remainder of 430.
Write down 4 as next digit of the result. 
Result so far: 145460.4
Deduct 2080 from 2510 and we're left with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

On to step 10:
If we divide 4300 by 520, we get 8 and a remainder of 140.
The next digit of our result is 8. 
Result so far: 145460.48
Subtracting 4160 from 4300 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 11:
520 goes into 1400 2 times with a remainder of 360.
The number 2 becomes the next digit in our result. 
Result so far: 145460.482
Subtracting 1040 from 1400 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 12:
When dividing 3600 by 520, we get 6 with a remainder of 480.
Record the quotient 6 as the next digit in the result. 
Result so far: 145460.4826
If we subtract 3120 from 3600, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 13:
If we divide 4800 by 520, we get 9 and a remainder of 120.
Record the quotient 9 as the next digit in the result. 
Result so far: 145460.48269
Subtracting 4680 from 4800 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 14:
If we divide 1200 by 520, we get 2 and a remainder of 160.
Put 2 as the next digit of the answer. 
Result so far: 145460.482692
Subtract 1040 from 1200 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 15:
1600 divided by 520 is 3 with a remainder of 40.
Use 3 as the next digit of our solution. 
Result so far: 145460.4826923
Deduct 1560 from 1600 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 16:
When dividing 400 by 520, we get 0 with a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 145460.4826923
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 145460.4826923 with a remainder of 4e-07.