We look at the division of 89943086 by 689 
Our goal is to divide 89943086 by 689.

Going ahead to step 1:
689 goes into 8 0 times with 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 (9) of the dividend behind the 8 and repeat the process: 89 / 689

Advancing to step 2:
If we divide 89 by 689, we get 0 and a remainder of 89.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 89, we end up with 89.
Include the next digit (9) from the dividend after 89, then repeat: 899 / 689

Step 3:
The number 689 fits into 899 1 times, leaving a remainder of 210.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 689 from 899 to get 210.
Fetch the next digit (4) from the dividend, attach it to 210 and continue: 2104 / 689

Advancing to step 4:
2104 divided by 689 is 3 with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 2067 from 2104 and we're left with 37.
Take the next digit (3) from the dividend and append it to 37, then repeat: 373 / 689

On to step 5:
689 goes into 373 0 times with a remainder of 373.
The number 0 becomes the next digit in our result. 
Result so far: 130.0
The remainder is 373 after subtracting 0 from 373.
Fetch the next digit (0) from the dividend, attach it to 373 and continue: 3730 / 689

On to step 6:
689 goes into 3730 5 times with a remainder of 285.
The next digit of our result is 5. 
Result so far: 1305.0
If we subtract 3445 from 3730, we get 285.
Include the next digit (8) from the dividend after 285, then repeat: 2858 / 689

Advancing to step 7:
689 goes into 2858 4 times with a remainder of 102.
Record the quotient 4 as the next digit in the result. 
Result so far: 13054.0
Deduct 2756 from 2858 and we're left with 102.
Fetch the next digit (6) from the dividend, attach it to 102 and continue: 1026 / 689

On to step 8:
The number 689 fits into 1026 1 times, leaving a remainder of 337.
The number 1 becomes the next digit in our result. 
Result so far: 130541.0
Deduct 689 from 1026 and we're left with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Moving on to step 9:
689 can be fit into 3370 4 times, resulting in a remainder of 614.
Record the quotient 4 as the next digit in the result. 
Result so far: 130541.4
Deduct 2756 from 3370 and we're left with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Let's proceed to step 10:
The number 689 fits into 6140 8 times, leaving a remainder of 628.
Put 8 as the next digit of the answer. 
Result so far: 130541.48
Subtract 5512 from 6140 to get 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

On to step 11:
689 can be fit into 6280 9 times, resulting in a remainder of 79.
Use 9 as the next digit of our solution. 
Result so far: 130541.489
If we take 6201 away from 6280, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 12:
689 goes into 790 1 times with a remainder of 101.
The number 1 becomes the next digit in our result. 
Result so far: 130541.4891
If we subtract 689 from 790, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Moving on to step 13:
689 can be fit into 1010 1 times, resulting in a remainder of 321.
The number 1 becomes the next digit in our result. 
Result so far: 130541.48911
If we take 689 away from 1010, we end up with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Our division results in 130541.48911 with a remaining 0.000321.