645552 ÷ 53 
We want to figure out the number of times 645552 can be divided by 53.

Step 1:
When dividing 6 by 53, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 53

Moving on to step 2:
64 divided by 53 is 1 with a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
If we take 53 away from 64, we end up with 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 53

Going ahead to step 3:
53 goes into 115 2 times with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 106 from 115, we get 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 53

Let's proceed to step 4:
95 divided by 53 is 1 with a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 121.0
If we take 53 away from 95, we end up with 42.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 53

On to step 5:
425 divided by 53 is 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 1218.0
The remainder is 1 after subtracting 424 from 425.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 53

Going ahead to step 6:
The number 53 fits into 12 0 times, leaving a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 12180.0
The remainder is 12 after subtracting 0 from 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
The number 53 fits into 120 2 times, leaving a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 12180.2
Subtract 106 from 120 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 8:
140 divided by 53 is 2 with a remainder of 34.
The next digit of our result is 2. 
Result so far: 12180.22
Deduct 106 from 140 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The quotient of the division is 12180.22, and the remainder is 0.034.