We look at the division of 90980756 by 423 
We want to figure out the number of times 90980756 can be divided by 423.

Step 1:
423 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 423

Going ahead to step 2:
90 divided by 423 is 0 with a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Bring next digit (9) of the dividend behind the 90 and repeat the process: 909 / 423

Let's proceed to step 3:
If we divide 909 by 423, we get 2 and a remainder of 63.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 846 from 909 to get 63.
Bring next digit (8) of the dividend behind the 63 and repeat the process: 638 / 423

On to step 4:
423 can be fit into 638 1 times, resulting in a remainder of 215.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtract 423 from 638 to get 215.
Take the next digit (0) from the dividend and append it to 215, then repeat: 2150 / 423

On to step 5:
423 goes into 2150 5 times with a remainder of 35.
The next digit of our result is 5. 
Result so far: 215.0
If we subtract 2115 from 2150, we get 35.
Fetch the next digit (7) from the dividend, attach it to 35 and continue: 357 / 423

On to step 6:
The number 423 fits into 357 0 times, leaving a remainder of 357.
The number 0 becomes the next digit in our result. 
Result so far: 2150.0
Subtracting 0 from 357 leaves us with 357.
Include the next digit (5) from the dividend after 357, then repeat: 3575 / 423

On to step 7:
When dividing 3575 by 423, we get 8 with a remainder of 191.
The next digit of our result is 8. 
Result so far: 21508.0
The remainder is 191 after subtracting 3384 from 3575.
Include the next digit (6) from the dividend after 191, then repeat: 1916 / 423

Let's proceed to step 8:
423 can be fit into 1916 4 times, resulting in a remainder of 224.
Record the quotient 4 as the next digit in the result. 
Result so far: 215084.0
Subtract 1692 from 1916 to get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Advancing to step 9:
423 can be fit into 2240 5 times, resulting in a remainder of 125.
The number 5 becomes the next digit in our result. 
Result so far: 215084.5
Subtracting 2115 from 2240 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Advancing to step 10:
When dividing 1250 by 423, we get 2 with a remainder of 404.
Put 2 as the next digit of the answer. 
Result so far: 215084.52
Subtract 846 from 1250 to get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

On to step 11:
423 goes into 4040 9 times with a remainder of 233.
Write down 9 as next digit of the result. 
Result so far: 215084.529
Deduct 3807 from 4040 and we're left with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Let's proceed to step 12:
2330 divided by 423 is 5 with a remainder of 215.
Put 5 as the next digit of the answer. 
Result so far: 215084.5295
Deduct 2115 from 2330 and we're left with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Moving on to step 13:
423 can be fit into 2150 5 times, resulting in a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 215084.52955
If we take 2115 away from 2150, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 215084.52955 with a remainder of 3.5e-05.