We look at the division of 901987 by 4 
Let's see how many times 4 fits into 901987.

Advancing to step 1:
4 goes into 9 2 times with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 8 away from 9, we end up with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 4

Moving on to step 2:
If we divide 10 by 4, we get 2 and a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Deduct 8 from 10 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 4

Going ahead to step 3:
21 divided by 4 is 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 225.0
The remainder is 1 after subtracting 20 from 21.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 4

On to step 4:
19 divided by 4 is 4 with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 2254.0
The remainder is 3 after subtracting 16 from 19.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 4

Moving on to step 5:
The number 4 fits into 38 9 times, leaving a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 22549.0
If we subtract 36 from 38, we get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 4

Advancing to step 6:
4 can be fit into 27 6 times, resulting in a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 225496.0
Subtract 24 from 27 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
When dividing 30 by 4, we get 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 225496.7
The remainder is 2 after subtracting 28 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
When dividing 20 by 4, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 225496.75
If we take 20 away from 20, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 225496.75
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
If we divide 0 by 4, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 225496.75
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 225496.75, with a leftover of 0.0.