We look at the division of 873421 by 89 
Let's see how many times 89 fits into 873421.

Let's proceed to step 1:
If we divide 8 by 89, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 89

Advancing to step 2:
89 goes into 87 0 times with a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Take the next digit (3) from the dividend and append it to 87, then repeat: 873 / 89

Step 3:
89 goes into 873 9 times with a remainder of 72.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 72 after subtracting 801 from 873.
Include the next digit (4) from the dividend after 72, then repeat: 724 / 89

Going ahead to step 4:
When dividing 724 by 89, we get 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 98.0
If we take 712 away from 724, we end up with 12.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 89

Going ahead to step 5:
89 goes into 122 1 times with a remainder of 33.
The next digit of our result is 1. 
Result so far: 981.0
If we subtract 89 from 122, we get 33.
Grab the next digit (1) from the dividend, add it to 33, then carry on: 331 / 89

Going ahead to step 6:
If we divide 331 by 89, we get 3 and a remainder of 64.
Record the quotient 3 as the next digit in the result. 
Result so far: 9813.0
If we take 267 away from 331, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 7:
640 divided by 89 is 7 with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 9813.7
If we subtract 623 from 640, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 8:
If we divide 170 by 89, we get 1 and a remainder of 81.
Record the quotient 1 as the next digit in the result. 
Result so far: 9813.71
If we take 89 away from 170, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 9:
89 goes into 810 9 times with a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 9813.719
Deduct 801 from 810 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 10:
89 goes into 90 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 9813.7191
Subtract 89 from 90 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.

Step 11:
89 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 9813.7191
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
100 divided by 89 is 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 9813.719101
Subtract 89 from 100 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
89 can be fit into 110 1 times, resulting in a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 9813.7191011
Subtract 89 from 110 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final result is 9813.7191011 with a remainder of 2.1e-07.