Let's divide 31169953 by 648
We want to figure out the number of times 31169953 can be divided by 648.

On to step 1:
648 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 648

Step 2:
648 can be fit into 31 0 times, resulting in a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 31, we get 31.
Fetch the next digit (1) from the dividend, attach it to 31 and continue: 311 / 648

Let's proceed to step 3:
The number 648 fits into 311 0 times, leaving a remainder of 311.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 311 after subtracting 0 from 311.
Append the next digit (6) from the dividend to 311 and continue with: 3116 / 648

Moving on to step 4:
If we divide 3116 by 648, we get 4 and a remainder of 524.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 2592 from 3116 and we're left with 524.
Grab the next digit (9) from the dividend, add it to 524, then carry on: 5249 / 648

On to step 5:
648 can be fit into 5249 8 times, resulting in a remainder of 65.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtract 5184 from 5249 to get 65.
Append the next digit (9) from the dividend to 65 and continue with: 659 / 648

Advancing to step 6:
648 goes into 659 1 times with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 481.0
If we take 648 away from 659, we end up with 11.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 648

Let's proceed to step 7:
648 can be fit into 115 0 times, resulting in a remainder of 115.
The next digit of our result is 0. 
Result so far: 4810.0
Deduct 0 from 115 and we're left with 115.
Include the next digit (3) from the dividend after 115, then repeat: 1153 / 648

On to step 8:
1153 divided by 648 is 1 with a remainder of 505.
The next digit of our result is 1. 
Result so far: 48101.0
Subtract 648 from 1153 to get 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Step 9:
5050 divided by 648 is 7 with a remainder of 514.
Put 7 as the next digit of the answer. 
Result so far: 48101.7
Subtracting 4536 from 5050 leaves us with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Advancing to step 10:
648 goes into 5140 7 times with a remainder of 604.
The number 7 becomes the next digit in our result. 
Result so far: 48101.77
Subtracting 4536 from 5140 leaves us with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Our division results in 48101.77 with a remaining 0.604.