53940829 divided by 510 
We want to figure out the number of times 53940829 can be divided by 510.

On to step 1:
If we divide 5 by 510, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 510

Advancing to step 2:
If we divide 53 by 510, we get 0 and a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Take the next digit (9) from the dividend and append it to 53, then repeat: 539 / 510

Let's proceed to step 3:
The number 510 fits into 539 1 times, leaving a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 29 after subtracting 510 from 539.
Fetch the next digit (4) from the dividend, attach it to 29 and continue: 294 / 510

Step 4:
If we divide 294 by 510, we get 0 and a remainder of 294.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 294, we end up with 294.
Bring next digit (0) of the dividend behind the 294 and repeat the process: 2940 / 510

On to step 5:
If we divide 2940 by 510, we get 5 and a remainder of 390.
The number 5 becomes the next digit in our result. 
Result so far: 105.0
Subtracting 2550 from 2940 leaves us with 390.
Append the next digit (8) from the dividend to 390 and continue with: 3908 / 510

Advancing to step 6:
510 can be fit into 3908 7 times, resulting in a remainder of 338.
Record the quotient 7 as the next digit in the result. 
Result so far: 1057.0
The remainder is 338 after subtracting 3570 from 3908.
Include the next digit (2) from the dividend after 338, then repeat: 3382 / 510

On to step 7:
510 can be fit into 3382 6 times, resulting in a remainder of 322.
The next digit of our result is 6. 
Result so far: 10576.0
Deduct 3060 from 3382 and we're left with 322.
Fetch the next digit (9) from the dividend, attach it to 322 and continue: 3229 / 510

Step 8:
The number 510 fits into 3229 6 times, leaving a remainder of 169.
Record the quotient 6 as the next digit in the result. 
Result so far: 105766.0
The remainder is 169 after subtracting 3060 from 3229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

Step 9:
1690 divided by 510 is 3 with a remainder of 160.
Use 3 as the next digit of our solution. 
Result so far: 105766.3
Subtract 1530 from 1690 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.

Going ahead to step 10:
When dividing 1600 by 510, we get 3 with a remainder of 70.
Record the quotient 3 as the next digit in the result. 
Result so far: 105766.33
Subtracting 1530 from 1600 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 105766.33 with a remainder of 0.07.