We're dividing 75428910 by 624 
We want to figure out the number of times 75428910 can be divided by 624.

Let's proceed to step 1:
The number 624 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 624

Advancing to step 2:
The number 624 fits into 75 0 times, leaving a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 75 and we're left with 75.
Take the next digit (4) from the dividend and append it to 75, then repeat: 754 / 624

Going ahead to step 3:
If we divide 754 by 624, we get 1 and a remainder of 130.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 624 from 754 to get 130.
Include the next digit (2) from the dividend after 130, then repeat: 1302 / 624

Step 4:
When dividing 1302 by 624, we get 2 with a remainder of 54.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 1248 from 1302 to get 54.
Bring next digit (8) of the dividend behind the 54 and repeat the process: 548 / 624

Let's proceed to step 5:
When dividing 548 by 624, we get 0 with a remainder of 548.
The number 0 becomes the next digit in our result. 
Result so far: 120.0
Subtract 0 from 548 to get 548.
Take the next digit (9) from the dividend and append it to 548, then repeat: 5489 / 624

Going ahead to step 6:
If we divide 5489 by 624, we get 8 and a remainder of 497.
Write down 8 as next digit of the result. 
Result so far: 1208.0
The remainder is 497 after subtracting 4992 from 5489.
Bring next digit (1) of the dividend behind the 497 and repeat the process: 4971 / 624

On to step 7:
624 can be fit into 4971 7 times, resulting in a remainder of 603.
The next digit of our result is 7. 
Result so far: 12087.0
The remainder is 603 after subtracting 4368 from 4971.
Fetch the next digit (0) from the dividend, attach it to 603 and continue: 6030 / 624

On to step 8:
6030 divided by 624 is 9 with a remainder of 414.
The next digit of our result is 9. 
Result so far: 120879.0
Subtract 5616 from 6030 to get 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Step 9:
624 can be fit into 4140 6 times, resulting in a remainder of 396.
Use 6 as the next digit of our solution. 
Result so far: 120879.6
The remainder is 396 after subtracting 3744 from 4140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

On to step 10:
624 goes into 3960 6 times with a remainder of 216.
Write down 6 as next digit of the result. 
Result so far: 120879.66
Subtract 3744 from 3960 to get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

The final outcome is 120879.66, with a leftover of 0.216.