Let's divide 55485375 by 423
We want to figure out the number of times 55485375 can be divided by 423.

Going ahead to step 1:
5 divided by 423 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 423

Advancing to step 2:
423 goes into 55 0 times with a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 55, we end up with 55.
Bring next digit (4) of the dividend behind the 55 and repeat the process: 554 / 423

Step 3:
423 can be fit into 554 1 times, resulting in a remainder of 131.
The next digit of our result is 1. 
Result so far: 1.0
If we take 423 away from 554, we end up with 131.
Take the next digit (8) from the dividend and append it to 131, then repeat: 1318 / 423

On to step 4:
423 goes into 1318 3 times with a remainder of 49.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtracting 1269 from 1318 leaves us with 49.
Fetch the next digit (5) from the dividend, attach it to 49 and continue: 495 / 423

Advancing to step 5:
423 can be fit into 495 1 times, resulting in a remainder of 72.
Record the quotient 1 as the next digit in the result. 
Result so far: 131.0
Deduct 423 from 495 and we're left with 72.
Take the next digit (3) from the dividend and append it to 72, then repeat: 723 / 423

Going ahead to step 6:
If we divide 723 by 423, we get 1 and a remainder of 300.
The number 1 becomes the next digit in our result. 
Result so far: 1311.0
If we subtract 423 from 723, we get 300.
Grab the next digit (7) from the dividend, add it to 300, then carry on: 3007 / 423

Let's proceed to step 7:
3007 divided by 423 is 7 with a remainder of 46.
Use 7 as the next digit of our solution. 
Result so far: 13117.0
The remainder is 46 after subtracting 2961 from 3007.
Append the next digit (5) from the dividend to 46 and continue with: 465 / 423

Let's proceed to step 8:
423 can be fit into 465 1 times, resulting in a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 131171.0
Deduct 423 from 465 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 9:
423 goes into 420 0 times with a remainder of 420.
The next digit of our result is 0. 
Result so far: 131171.0
Subtracting 0 from 420 leaves us with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 10:
If we divide 4200 by 423, we get 9 and a remainder of 393.
Write down 9 as next digit of the result. 
Result so far: 131171.09
If we take 3807 away from 4200, we end up with 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Going ahead to step 11:
The number 423 fits into 3930 9 times, leaving a remainder of 123.
Put 9 as the next digit of the answer. 
Result so far: 131171.099
Deduct 3807 from 3930 and we're left with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

The final result is 131171.099 with a remainder of 0.0123.