We're dividing 90978238 by 401 
We want to divide 90978238 by 401.

Advancing to step 1:
9 divided by 401 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
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 / 401

Going ahead to step 2:
If we divide 90 by 401, we get 0 and a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Fetch the next digit (9) from the dividend, attach it to 90 and continue: 909 / 401

On to step 3:
When dividing 909 by 401, we get 2 with a remainder of 107.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 802 from 909, we get 107.
Include the next digit (7) from the dividend after 107, then repeat: 1077 / 401

Advancing to step 4:
401 goes into 1077 2 times with a remainder of 275.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Deduct 802 from 1077 and we're left with 275.
Grab the next digit (8) from the dividend, add it to 275, then carry on: 2758 / 401

On to step 5:
401 can be fit into 2758 6 times, resulting in a remainder of 352.
Put 6 as the next digit of the answer. 
Result so far: 226.0
If we take 2406 away from 2758, we end up with 352.
Take the next digit (2) from the dividend and append it to 352, then repeat: 3522 / 401

Let's proceed to step 6:
3522 divided by 401 is 8 with a remainder of 314.
Record the quotient 8 as the next digit in the result. 
Result so far: 2268.0
The remainder is 314 after subtracting 3208 from 3522.
Grab the next digit (3) from the dividend, add it to 314, then carry on: 3143 / 401

Going ahead to step 7:
If we divide 3143 by 401, we get 7 and a remainder of 336.
Use 7 as the next digit of our solution. 
Result so far: 22687.0
Subtracting 2807 from 3143 leaves us with 336.
Grab the next digit (8) from the dividend, add it to 336, then carry on: 3368 / 401

Moving on to step 8:
3368 divided by 401 is 8 with a remainder of 160.
Put 8 as the next digit of the answer. 
Result so far: 226878.0
Subtracting 3208 from 3368 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 9:
The number 401 fits into 1600 3 times, leaving a remainder of 397.
Put 3 as the next digit of the answer. 
Result so far: 226878.3
If we subtract 1203 from 1600, we get 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

Let's proceed to step 10:
3970 divided by 401 is 9 with a remainder of 361.
Write down 9 as next digit of the result. 
Result so far: 226878.39
If we subtract 3609 from 3970, we get 361.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3610, and continue the process.

Going ahead to step 11:
3610 divided by 401 is 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 226878.399
Subtract 3609 from 3610 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 226878.399 and a remainder of 0.0001.