Let's divide 66521366 by 53
Our goal is to divide 66521366 by 53.

Going ahead to step 1:
When dividing 6 by 53, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 53

Going ahead to step 2:
66 divided by 53 is 1 with a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 53 from 66 and we're left with 13.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 53

Step 3:
53 can be fit into 135 2 times, resulting in a remainder of 29.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 106 away from 135, we end up with 29.
Bring next digit (2) of the dividend behind the 29 and repeat the process: 292 / 53

On to step 4:
The number 53 fits into 292 5 times, leaving a remainder of 27.
Put 5 as the next digit of the answer. 
Result so far: 125.0
If we subtract 265 from 292, we get 27.
Bring next digit (1) of the dividend behind the 27 and repeat the process: 271 / 53

Advancing to step 5:
53 goes into 271 5 times with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 1255.0
If we subtract 265 from 271, we get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 53

Moving on to step 6:
The number 53 fits into 63 1 times, leaving a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 12551.0
If we take 53 away from 63, we end up with 10.
Bring next digit (6) of the dividend behind the 10 and repeat the process: 106 / 53

Step 7:
106 divided by 53 is 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 125512.0
If we subtract 106 from 106, we get 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 53

On to step 8:
If we divide 6 by 53, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 1255120.0
The remainder is 6 after subtracting 0 from 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
When dividing 60 by 53, we get 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 1255120.1
If we take 53 away from 60, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 10:
If we divide 70 by 53, we get 1 and a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1255120.11
The remainder is 17 after subtracting 53 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The quotient of the division is 1255120.11, and the remainder is 0.017.