We look at the division of 688570 by 59 
The aim is to understand the frequency of 59 in 688570.

On to step 1:
If we divide 6 by 59, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 59

Let's proceed to step 2:
If we divide 68 by 59, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 59 away from 68, we end up with 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 59

Advancing to step 3:
59 can be fit into 98 1 times, resulting in a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Deduct 59 from 98 and we're left with 39.
Grab the next digit (5) from the dividend, add it to 39, then carry on: 395 / 59

Going ahead to step 4:
If we divide 395 by 59, we get 6 and a remainder of 41.
The number 6 becomes the next digit in our result. 
Result so far: 116.0
Subtracting 354 from 395 leaves us with 41.
Grab the next digit (7) from the dividend, add it to 41, then carry on: 417 / 59

Moving on to step 5:
59 can be fit into 417 7 times, resulting in a remainder of 4.
The next digit of our result is 7. 
Result so far: 1167.0
If we take 413 away from 417, we end up with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 59

On to step 6:
59 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 11670.0
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 7:
The number 59 fits into 400 6 times, leaving a remainder of 46.
The next digit of our result is 6. 
Result so far: 11670.6
Deduct 354 from 400 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 8:
The number 59 fits into 460 7 times, leaving a remainder of 47.
Write down 7 as next digit of the result. 
Result so far: 11670.67
If we take 413 away from 460, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 9:
470 divided by 59 is 7 with a remainder of 57.
Write down 7 as next digit of the result. 
Result so far: 11670.677
If we take 413 away from 470, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

After the division, we end up with 11670.677 and a remainder of 0.0057.