We're dividing 75153979 by 513 
We want to figure out the number of times 75153979 can be divided by 513.

Going ahead to step 1:
513 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 513

On to step 2:
The number 513 fits into 75 0 times, leaving a remainder of 75.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Take the next digit (1) from the dividend and append it to 75, then repeat: 751 / 513

Moving on to step 3:
If we divide 751 by 513, we get 1 and a remainder of 238.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 513 from 751 to get 238.
Grab the next digit (5) from the dividend, add it to 238, then carry on: 2385 / 513

Step 4:
513 goes into 2385 4 times with a remainder of 333.
Write down 4 as next digit of the result. 
Result so far: 14.0
Subtract 2052 from 2385 to get 333.
Grab the next digit (3) from the dividend, add it to 333, then carry on: 3333 / 513

Step 5:
513 can be fit into 3333 6 times, resulting in a remainder of 255.
The number 6 becomes the next digit in our result. 
Result so far: 146.0
If we take 3078 away from 3333, we end up with 255.
Append the next digit (9) from the dividend to 255 and continue with: 2559 / 513

Step 6:
If we divide 2559 by 513, we get 4 and a remainder of 507.
Record the quotient 4 as the next digit in the result. 
Result so far: 1464.0
Subtract 2052 from 2559 to get 507.
Fetch the next digit (7) from the dividend, attach it to 507 and continue: 5077 / 513

On to step 7:
When dividing 5077 by 513, we get 9 with a remainder of 460.
Write down 9 as next digit of the result. 
Result so far: 14649.0
Deduct 4617 from 5077 and we're left with 460.
Append the next digit (9) from the dividend to 460 and continue with: 4609 / 513

On to step 8:
4609 divided by 513 is 8 with a remainder of 505.
The next digit of our result is 8. 
Result so far: 146498.0
The remainder is 505 after subtracting 4104 from 4609.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Advancing to step 9:
5050 divided by 513 is 9 with a remainder of 433.
Write down 9 as next digit of the result. 
Result so far: 146498.9
If we subtract 4617 from 5050, we get 433.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

Advancing to step 10:
4330 divided by 513 is 8 with a remainder of 226.
The next digit of our result is 8. 
Result so far: 146498.98
Subtract 4104 from 4330 to get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Step 11:
513 can be fit into 2260 4 times, resulting in a remainder of 208.
Write down 4 as next digit of the result. 
Result so far: 146498.984
Deduct 2052 from 2260 and we're left with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Let's proceed to step 12:
513 can be fit into 2080 4 times, resulting in a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 146498.9844
Subtracting 2052 from 2080 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 146498.9844 and a remainder of 0.00028.