Let's divide 858401 by 89
Our goal is to divide 858401 by 89.

Step 1:
89 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 89

Moving on to step 2:
When dividing 85 by 89, we get 0 with a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Bring next digit (8) of the dividend behind the 85 and repeat the process: 858 / 89

Advancing to step 3:
If we divide 858 by 89, we get 9 and a remainder of 57.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we take 801 away from 858, we end up with 57.
Bring next digit (4) of the dividend behind the 57 and repeat the process: 574 / 89

Moving on to step 4:
89 can be fit into 574 6 times, resulting in a remainder of 40.
Use 6 as the next digit of our solution. 
Result so far: 96.0
Subtract 534 from 574 to get 40.
Grab the next digit (0) from the dividend, add it to 40, then carry on: 400 / 89

Advancing to step 5:
89 can be fit into 400 4 times, resulting in a remainder of 44.
The next digit of our result is 4. 
Result so far: 964.0
Subtract 356 from 400 to get 44.
Include the next digit (1) from the dividend after 44, then repeat: 441 / 89

Going ahead to step 6:
When dividing 441 by 89, we get 4 with a remainder of 85.
The number 4 becomes the next digit in our result. 
Result so far: 9644.0
Subtract 356 from 441 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Moving on to step 7:
When dividing 850 by 89, we get 9 with a remainder of 49.
Put 9 as the next digit of the answer. 
Result so far: 9644.9
Deduct 801 from 850 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 8:
490 divided by 89 is 5 with a remainder of 45.
The next digit of our result is 5. 
Result so far: 9644.95
Subtracting 445 from 490 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 9:
The number 89 fits into 450 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 9644.955
Deduct 445 from 450 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 9644.955, and the remainder is 0.0005.