91290291 divided by 407 
Our goal is to divide 91290291 by 407.

Let's proceed to step 1:
If we divide 9 by 407, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 407

Step 2:
The number 407 fits into 91 0 times, leaving a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Bring next digit (2) of the dividend behind the 91 and repeat the process: 912 / 407

Advancing to step 3:
If we divide 912 by 407, we get 2 and a remainder of 98.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 814 from 912 to get 98.
Grab the next digit (9) from the dividend, add it to 98, then carry on: 989 / 407

On to step 4:
989 divided by 407 is 2 with a remainder of 175.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtracting 814 from 989 leaves us with 175.
Grab the next digit (0) from the dividend, add it to 175, then carry on: 1750 / 407

Going ahead to step 5:
The number 407 fits into 1750 4 times, leaving a remainder of 122.
The next digit of our result is 4. 
Result so far: 224.0
If we take 1628 away from 1750, we end up with 122.
Append the next digit (2) from the dividend to 122 and continue with: 1222 / 407

Advancing to step 6:
407 goes into 1222 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 2243.0
The remainder is 1 after subtracting 1221 from 1222.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 407

On to step 7:
The number 407 fits into 19 0 times, leaving a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 22430.0
If we take 0 away from 19, we end up with 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 407

Step 8:
191 divided by 407 is 0 with a remainder of 191.
Write down 0 as next digit of the result. 
Result so far: 224300.0
If we take 0 away from 191, we end up with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Going ahead to step 9:
The number 407 fits into 1910 4 times, leaving a remainder of 282.
Use 4 as the next digit of our solution. 
Result so far: 224300.4
If we subtract 1628 from 1910, we get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Advancing to step 10:
407 goes into 2820 6 times with a remainder of 378.
Use 6 as the next digit of our solution. 
Result so far: 224300.46
Deduct 2442 from 2820 and we're left with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Moving on to step 11:
3780 divided by 407 is 9 with a remainder of 117.
The next digit of our result is 9. 
Result so far: 224300.469
If we take 3663 away from 3780, we end up with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Let's proceed to step 12:
407 can be fit into 1170 2 times, resulting in a remainder of 356.
The number 2 becomes the next digit in our result. 
Result so far: 224300.4692
Deduct 814 from 1170 and we're left with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Moving on to step 13:
The number 407 fits into 3560 8 times, leaving a remainder of 304.
Record the quotient 8 as the next digit in the result. 
Result so far: 224300.46928
If we take 3256 away from 3560, we end up with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Step 14:
If we divide 3040 by 407, we get 7 and a remainder of 191.
Write down 7 as next digit of the result. 
Result so far: 224300.469287
If we subtract 2849 from 3040, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

On to step 15:
When dividing 1910 by 407, we get 4 with a remainder of 282.
Write down 4 as next digit of the result. 
Result so far: 224300.4692874
The remainder is 282 after subtracting 1628 from 1910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Step 16:
When dividing 2820 by 407, we get 6 with a remainder of 378.
Record the quotient 6 as the next digit in the result. 
Result so far: 224300.46928746
Subtract 2442 from 2820 to get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

The final outcome is 224300.46928746, with a leftover of 3.78e-07.