We look at the division of 16639170 by 688 
The aim is to understand the frequency of 688 in 16639170.

Moving on to step 1:
688 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 688

On to step 2:
If we divide 16 by 688, we get 0 and a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 688

Moving on to step 3:
If we divide 166 by 688, we get 0 and a remainder of 166.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 166 leaves us with 166.
Fetch the next digit (3) from the dividend, attach it to 166 and continue: 1663 / 688

Step 4:
688 goes into 1663 2 times with a remainder of 287.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 1376 from 1663 and we're left with 287.
Append the next digit (9) from the dividend to 287 and continue with: 2879 / 688

Moving on to step 5:
When dividing 2879 by 688, we get 4 with a remainder of 127.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Subtracting 2752 from 2879 leaves us with 127.
Bring next digit (1) of the dividend behind the 127 and repeat the process: 1271 / 688

Step 6:
1271 divided by 688 is 1 with a remainder of 583.
Record the quotient 1 as the next digit in the result. 
Result so far: 241.0
If we take 688 away from 1271, we end up with 583.
Fetch the next digit (7) from the dividend, attach it to 583 and continue: 5837 / 688

On to step 7:
5837 divided by 688 is 8 with a remainder of 333.
Record the quotient 8 as the next digit in the result. 
Result so far: 2418.0
If we take 5504 away from 5837, we end up with 333.
Include the next digit (0) from the dividend after 333, then repeat: 3330 / 688

On to step 8:
688 can be fit into 3330 4 times, resulting in a remainder of 578.
Write down 4 as next digit of the result. 
Result so far: 24184.0
If we subtract 2752 from 3330, we get 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Going ahead to step 9:
688 goes into 5780 8 times with a remainder of 276.
Put 8 as the next digit of the answer. 
Result so far: 24184.8
If we subtract 5504 from 5780, we get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

On to step 10:
688 can be fit into 2760 4 times, resulting in a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 24184.84
Deduct 2752 from 2760 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
The number 688 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 24184.84
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 12:
688 can be fit into 800 1 times, resulting in a remainder of 112.
Record the quotient 1 as the next digit in the result. 
Result so far: 24184.8401
Deduct 688 from 800 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 13:
1120 divided by 688 is 1 with a remainder of 432.
Put 1 as the next digit of the answer. 
Result so far: 24184.84011
Deduct 688 from 1120 and we're left with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

The quotient of the division is 24184.84011, and the remainder is 0.000432.