90935988 divided by 406 
We want to figure out the number of times 90935988 can be divided by 406.

Moving on to step 1:
The number 406 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 406

Advancing to step 2:
The number 406 fits into 90 0 times, leaving a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Take the next digit (9) from the dividend and append it to 90, then repeat: 909 / 406

Going ahead to step 3:
406 goes into 909 2 times with a remainder of 97.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 97 after subtracting 812 from 909.
Append the next digit (3) from the dividend to 97 and continue with: 973 / 406

On to step 4:
If we divide 973 by 406, we get 2 and a remainder of 161.
Use 2 as the next digit of our solution. 
Result so far: 22.0
If we subtract 812 from 973, we get 161.
Append the next digit (5) from the dividend to 161 and continue with: 1615 / 406

Advancing to step 5:
1615 divided by 406 is 3 with a remainder of 397.
Record the quotient 3 as the next digit in the result. 
Result so far: 223.0
If we take 1218 away from 1615, we end up with 397.
Fetch the next digit (9) from the dividend, attach it to 397 and continue: 3979 / 406

Going ahead to step 6:
The number 406 fits into 3979 9 times, leaving a remainder of 325.
Put 9 as the next digit of the answer. 
Result so far: 2239.0
Deduct 3654 from 3979 and we're left with 325.
Take the next digit (8) from the dividend and append it to 325, then repeat: 3258 / 406

Let's proceed to step 7:
When dividing 3258 by 406, we get 8 with a remainder of 10.
The next digit of our result is 8. 
Result so far: 22398.0
Subtracting 3248 from 3258 leaves us with 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 406

Advancing to step 8:
If we divide 108 by 406, we get 0 and a remainder of 108.
The number 0 becomes the next digit in our result. 
Result so far: 223980.0
The remainder is 108 after subtracting 0 from 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Advancing to step 9:
1080 divided by 406 is 2 with a remainder of 268.
Write down 2 as next digit of the result. 
Result so far: 223980.2
Subtracting 812 from 1080 leaves us with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Going ahead to step 10:
406 goes into 2680 6 times with a remainder of 244.
The next digit of our result is 6. 
Result so far: 223980.26
Deduct 2436 from 2680 and we're left with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Moving on to step 11:
406 can be fit into 2440 6 times, resulting in a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 223980.266
If we subtract 2436 from 2440, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 223980.266, with a leftover of 0.0004.