87308309 ÷ 689 
The aim is to understand the frequency of 689 in 87308309.

Let's proceed to step 1:
8 divided by 689 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 689

Going ahead to step 2:
689 goes into 87 0 times with a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Bring next digit (3) of the dividend behind the 87 and repeat the process: 873 / 689

Moving on to step 3:
689 can be fit into 873 1 times, resulting in a remainder of 184.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 184 after subtracting 689 from 873.
Bring next digit (0) of the dividend behind the 184 and repeat the process: 1840 / 689

Going ahead to step 4:
1840 divided by 689 is 2 with a remainder of 462.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 1378 from 1840 to get 462.
Take the next digit (8) from the dividend and append it to 462, then repeat: 4628 / 689

Step 5:
689 goes into 4628 6 times with a remainder of 494.
Write down 6 as next digit of the result. 
Result so far: 126.0
Subtracting 4134 from 4628 leaves us with 494.
Bring next digit (3) of the dividend behind the 494 and repeat the process: 4943 / 689

Let's proceed to step 6:
When dividing 4943 by 689, we get 7 with a remainder of 120.
Put 7 as the next digit of the answer. 
Result so far: 1267.0
If we subtract 4823 from 4943, we get 120.
Include the next digit (0) from the dividend after 120, then repeat: 1200 / 689

Advancing to step 7:
When dividing 1200 by 689, we get 1 with a remainder of 511.
Record the quotient 1 as the next digit in the result. 
Result so far: 12671.0
If we subtract 689 from 1200, we get 511.
Take the next digit (9) from the dividend and append it to 511, then repeat: 5119 / 689

Let's proceed to step 8:
If we divide 5119 by 689, we get 7 and a remainder of 296.
The next digit of our result is 7. 
Result so far: 126717.0
If we subtract 4823 from 5119, we get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Let's proceed to step 9:
The number 689 fits into 2960 4 times, leaving a remainder of 204.
The number 4 becomes the next digit in our result. 
Result so far: 126717.4
Subtract 2756 from 2960 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

On to step 10:
When dividing 2040 by 689, we get 2 with a remainder of 662.
Write down 2 as next digit of the result. 
Result so far: 126717.42
Subtracting 1378 from 2040 leaves us with 662.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

On to step 11:
6620 divided by 689 is 9 with a remainder of 419.
Put 9 as the next digit of the answer. 
Result so far: 126717.429
Subtract 6201 from 6620 to get 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

On to step 12:
If we divide 4190 by 689, we get 6 and a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 126717.4296
Deduct 4134 from 4190 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 13:
If we divide 560 by 689, we get 0 and a remainder of 560.
The next digit of our result is 0. 
Result so far: 126717.4296
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 14:
When dividing 5600 by 689, we get 8 with a remainder of 88.
Put 8 as the next digit of the answer. 
Result so far: 126717.429608
Subtract 5512 from 5600 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 15:
689 goes into 880 1 times with a remainder of 191.
The number 1 becomes the next digit in our result. 
Result so far: 126717.4296081
If we subtract 689 from 880, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Advancing to step 16:
The number 689 fits into 1910 2 times, leaving a remainder of 532.
Record the quotient 2 as the next digit in the result. 
Result so far: 126717.42960812
If we subtract 1378 from 1910, we get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

The quotient of the division is 126717.42960812, and the remainder is 5.32e-07.