We look at the division of 801990 by 87 
Our goal is to divide 801990 by 87.

Moving on to step 1:
87 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 87

Going ahead to step 2:
80 divided by 87 is 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Fetch the next digit (1) from the dividend, attach it to 80 and continue: 801 / 87

Advancing to step 3:
The number 87 fits into 801 9 times, leaving a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 18 after subtracting 783 from 801.
Bring next digit (9) of the dividend behind the 18 and repeat the process: 189 / 87

Going ahead to step 4:
87 goes into 189 2 times with a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 92.0
Subtract 174 from 189 to get 15.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 87

On to step 5:
If we divide 159 by 87, we get 1 and a remainder of 72.
The number 1 becomes the next digit in our result. 
Result so far: 921.0
The remainder is 72 after subtracting 87 from 159.
Bring next digit (0) of the dividend behind the 72 and repeat the process: 720 / 87

Going ahead to step 6:
87 can be fit into 720 8 times, resulting in a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 9218.0
Subtract 696 from 720 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 7:
87 can be fit into 240 2 times, resulting in a remainder of 66.
Put 2 as the next digit of the answer. 
Result so far: 9218.2
Deduct 174 from 240 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 8:
When dividing 660 by 87, we get 7 with a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 9218.27
If we take 609 away from 660, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 9:
If we divide 510 by 87, we get 5 and a remainder of 75.
The next digit of our result is 5. 
Result so far: 9218.275
Subtracting 435 from 510 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 10:
87 can be fit into 750 8 times, resulting in a remainder of 54.
Record the quotient 8 as the next digit in the result. 
Result so far: 9218.2758
If we subtract 696 from 750, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 11:
The number 87 fits into 540 6 times, leaving a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 9218.27586
Subtract 522 from 540 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 12:
The number 87 fits into 180 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 9218.275862
The remainder is 6 after subtracting 174 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
If we divide 60 by 87, we get 0 and a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 9218.275862
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 14:
87 can be fit into 600 6 times, resulting in a remainder of 78.
Write down 6 as next digit of the result. 
Result so far: 9218.27586206
The remainder is 78 after subtracting 522 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

After the division, we end up with 9218.27586206 and a remainder of 7.8e-08.