90918421 ÷ 506 
We're looking to find how many times 506 goes into 90918421.

Advancing to step 1:
If we divide 9 by 506, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 506

Going ahead to step 2:
When dividing 90 by 506, we get 0 with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Include the next digit (9) from the dividend after 90, then repeat: 909 / 506

Let's proceed to step 3:
506 goes into 909 1 times with a remainder of 403.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 506 away from 909, we end up with 403.
Grab the next digit (1) from the dividend, add it to 403, then carry on: 4031 / 506

On to step 4:
506 can be fit into 4031 7 times, resulting in a remainder of 489.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 489 after subtracting 3542 from 4031.
Fetch the next digit (8) from the dividend, attach it to 489 and continue: 4898 / 506

Moving on to step 5:
If we divide 4898 by 506, we get 9 and a remainder of 344.
The next digit of our result is 9. 
Result so far: 179.0
If we subtract 4554 from 4898, we get 344.
Fetch the next digit (4) from the dividend, attach it to 344 and continue: 3444 / 506

Advancing to step 6:
506 can be fit into 3444 6 times, resulting in a remainder of 408.
The number 6 becomes the next digit in our result. 
Result so far: 1796.0
Subtracting 3036 from 3444 leaves us with 408.
Fetch the next digit (2) from the dividend, attach it to 408 and continue: 4082 / 506

Moving on to step 7:
4082 divided by 506 is 8 with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 17968.0
If we subtract 4048 from 4082, we get 34.
Fetch the next digit (1) from the dividend, attach it to 34 and continue: 341 / 506

Going ahead to step 8:
506 can be fit into 341 0 times, resulting in a remainder of 341.
The number 0 becomes the next digit in our result. 
Result so far: 179680.0
Subtract 0 from 341 to get 341.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Moving on to step 9:
When dividing 3410 by 506, we get 6 with a remainder of 374.
Write down 6 as next digit of the result. 
Result so far: 179680.6
The remainder is 374 after subtracting 3036 from 3410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

On to step 10:
The number 506 fits into 3740 7 times, leaving a remainder of 198.
Use 7 as the next digit of our solution. 
Result so far: 179680.67
If we subtract 3542 from 3740, we get 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

On to step 11:
1980 divided by 506 is 3 with a remainder of 462.
Write down 3 as next digit of the result. 
Result so far: 179680.673
Subtract 1518 from 1980 to get 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Let's proceed to step 12:
4620 divided by 506 is 9 with a remainder of 66.
Record the quotient 9 as the next digit in the result. 
Result so far: 179680.6739
If we subtract 4554 from 4620, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 13:
506 can be fit into 660 1 times, resulting in a remainder of 154.
Put 1 as the next digit of the answer. 
Result so far: 179680.67391
If we subtract 506 from 660, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Going ahead to step 14:
When dividing 1540 by 506, we get 3 with a remainder of 22.
The number 3 becomes the next digit in our result. 
Result so far: 179680.673913
Subtracting 1518 from 1540 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 15:
220 divided by 506 is 0 with a remainder of 220.
Record the quotient 0 as the next digit in the result. 
Result so far: 179680.673913
If we take 0 away from 220, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 16:
506 goes into 2200 4 times with a remainder of 176.
Put 4 as the next digit of the answer. 
Result so far: 179680.67391304
If we subtract 2024 from 2200, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

The final result is 179680.67391304 with a remainder of 1.76e-07.