81673 divided by 89 
The aim is to understand the frequency of 89 in 81673.

Step 1:
The number 89 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 89

Moving on to step 2:
If we divide 81 by 89, we get 0 and a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Append the next digit (6) from the dividend to 81 and continue with: 816 / 89

On to step 3:
The number 89 fits into 816 9 times, leaving a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 801 from 816 to get 15.
Append the next digit (7) from the dividend to 15 and continue with: 157 / 89

On to step 4:
89 can be fit into 157 1 times, resulting in a remainder of 68.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
If we subtract 89 from 157, we get 68.
Fetch the next digit (3) from the dividend, attach it to 68 and continue: 683 / 89

Going ahead to step 5:
683 divided by 89 is 7 with a remainder of 60.
Use 7 as the next digit of our solution. 
Result so far: 917.0
If we take 623 away from 683, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 6:
The number 89 fits into 600 6 times, leaving a remainder of 66.
The next digit of our result is 6. 
Result so far: 917.6
Deduct 534 from 600 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.

On to step 7:
660 divided by 89 is 7 with a remainder of 37.
Write down 7 as next digit of the result. 
Result so far: 917.67
Deduct 623 from 660 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 8:
370 divided by 89 is 4 with a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 917.674
The remainder is 14 after subtracting 356 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 9:
89 goes into 140 1 times with a remainder of 51.
Write down 1 as next digit of the result. 
Result so far: 917.6741
If we subtract 89 from 140, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 10:
If we divide 510 by 89, we get 5 and a remainder of 65.
The next digit of our result is 5. 
Result so far: 917.67415
If we subtract 445 from 510, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 11:
If we divide 650 by 89, we get 7 and a remainder of 27.
Put 7 as the next digit of the answer. 
Result so far: 917.674157
Subtract 623 from 650 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 12:
89 goes into 270 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 917.6741573
Deduct 267 from 270 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 13:
30 divided by 89 is 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 917.6741573
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

After the division, we end up with 917.6741573 and a remainder of 3e-08.