55387113 ÷ 648 
We want to divide 55387113 by 648.

Moving on to step 1:
5 divided by 648 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 648

Step 2:
648 can be fit into 55 0 times, resulting in a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 55 after subtracting 0 from 55.
Include the next digit (3) from the dividend after 55, then repeat: 553 / 648

Advancing to step 3:
If we divide 553 by 648, we get 0 and a remainder of 553.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 553, we end up with 553.
Fetch the next digit (8) from the dividend, attach it to 553 and continue: 5538 / 648

On to step 4:
648 goes into 5538 8 times with a remainder of 354.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 5184 from 5538 to get 354.
Include the next digit (7) from the dividend after 354, then repeat: 3547 / 648

Moving on to step 5:
When dividing 3547 by 648, we get 5 with a remainder of 307.
The next digit of our result is 5. 
Result so far: 85.0
Subtracting 3240 from 3547 leaves us with 307.
Append the next digit (1) from the dividend to 307 and continue with: 3071 / 648

Advancing to step 6:
3071 divided by 648 is 4 with a remainder of 479.
The next digit of our result is 4. 
Result so far: 854.0
The remainder is 479 after subtracting 2592 from 3071.
Fetch the next digit (1) from the dividend, attach it to 479 and continue: 4791 / 648

Let's proceed to step 7:
4791 divided by 648 is 7 with a remainder of 255.
Put 7 as the next digit of the answer. 
Result so far: 8547.0
Deduct 4536 from 4791 and we're left with 255.
Append the next digit (3) from the dividend to 255 and continue with: 2553 / 648

Step 8:
648 can be fit into 2553 3 times, resulting in a remainder of 609.
Use 3 as the next digit of our solution. 
Result so far: 85473.0
If we take 1944 away from 2553, we end up with 609.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6090, and continue the process.

Moving on to step 9:
When dividing 6090 by 648, we get 9 with a remainder of 258.
The next digit of our result is 9. 
Result so far: 85473.9
The remainder is 258 after subtracting 5832 from 6090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Advancing to step 10:
If we divide 2580 by 648, we get 3 and a remainder of 636.
Put 3 as the next digit of the answer. 
Result so far: 85473.93
If we take 1944 away from 2580, we end up with 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

On to step 11:
6360 divided by 648 is 9 with a remainder of 528.
The next digit of our result is 9. 
Result so far: 85473.939
The remainder is 528 after subtracting 5832 from 6360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Going ahead to step 12:
5280 divided by 648 is 8 with a remainder of 96.
Use 8 as the next digit of our solution. 
Result so far: 85473.9398
If we subtract 5184 from 5280, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 13:
960 divided by 648 is 1 with a remainder of 312.
The number 1 becomes the next digit in our result. 
Result so far: 85473.93981
If we subtract 648 from 960, we get 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

On to step 14:
The number 648 fits into 3120 4 times, leaving a remainder of 528.
Record the quotient 4 as the next digit in the result. 
Result so far: 85473.939814
Subtracting 2592 from 3120 leaves us with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Going ahead to step 15:
If we divide 5280 by 648, we get 8 and a remainder of 96.
Record the quotient 8 as the next digit in the result. 
Result so far: 85473.9398148
Deduct 5184 from 5280 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Going ahead to step 16:
648 can be fit into 960 1 times, resulting in a remainder of 312.
Put 1 as the next digit of the answer. 
Result so far: 85473.93981481
If we take 648 away from 960, we end up with 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Our division results in 85473.93981481 with a remaining 3.12e-07.