We look at the division of 77808572 by 689 
The aim is to understand the frequency of 689 in 77808572.

Advancing to step 1:
7 divided by 689 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 689

Let's proceed to step 2:
77 divided by 689 is 0 with a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Grab the next digit (8) from the dividend, add it to 77, then carry on: 778 / 689

On to step 3:
689 goes into 778 1 times with a remainder of 89.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 689 from 778 to get 89.
Grab the next digit (0) from the dividend, add it to 89, then carry on: 890 / 689

Moving on to step 4:
The number 689 fits into 890 1 times, leaving a remainder of 201.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
The remainder is 201 after subtracting 689 from 890.
Take the next digit (8) from the dividend and append it to 201, then repeat: 2018 / 689

On to step 5:
When dividing 2018 by 689, we get 2 with a remainder of 640.
The number 2 becomes the next digit in our result. 
Result so far: 112.0
If we take 1378 away from 2018, we end up with 640.
Grab the next digit (5) from the dividend, add it to 640, then carry on: 6405 / 689

Going ahead to step 6:
The number 689 fits into 6405 9 times, leaving a remainder of 204.
The next digit of our result is 9. 
Result so far: 1129.0
Deduct 6201 from 6405 and we're left with 204.
Fetch the next digit (7) from the dividend, attach it to 204 and continue: 2047 / 689

Moving on to step 7:
If we divide 2047 by 689, we get 2 and a remainder of 669.
The next digit of our result is 2. 
Result so far: 11292.0
Subtract 1378 from 2047 to get 669.
Fetch the next digit (2) from the dividend, attach it to 669 and continue: 6692 / 689

On to step 8:
When dividing 6692 by 689, we get 9 with a remainder of 491.
Put 9 as the next digit of the answer. 
Result so far: 112929.0
Subtract 6201 from 6692 to get 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Let's proceed to step 9:
The number 689 fits into 4910 7 times, leaving a remainder of 87.
Record the quotient 7 as the next digit in the result. 
Result so far: 112929.7
The remainder is 87 after subtracting 4823 from 4910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Let's proceed to step 10:
When dividing 870 by 689, we get 1 with a remainder of 181.
Record the quotient 1 as the next digit in the result. 
Result so far: 112929.71
Deduct 689 from 870 and we're left with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Moving on to step 11:
If we divide 1810 by 689, we get 2 and a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 112929.712
If we take 1378 away from 1810, we end up 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.

Going ahead to step 12:
When dividing 4320 by 689, we get 6 with a remainder of 186.
The next digit of our result is 6. 
Result so far: 112929.7126
If we subtract 4134 from 4320, we get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Advancing to step 13:
The number 689 fits into 1860 2 times, leaving a remainder of 482.
Write down 2 as next digit of the result. 
Result so far: 112929.71262
Deduct 1378 from 1860 and we're left with 482.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Moving on to step 14:
If we divide 4820 by 689, we get 6 and a remainder of 686.
Use 6 as the next digit of our solution. 
Result so far: 112929.712626
If we subtract 4134 from 4820, we get 686.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6860, and continue the process.

Step 15:
6860 divided by 689 is 9 with a remainder of 659.
Write down 9 as next digit of the result. 
Result so far: 112929.7126269
Subtracting 6201 from 6860 leaves us with 659.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6590, and continue the process.

On to step 16:
The number 689 fits into 6590 9 times, leaving a remainder of 389.
The number 9 becomes the next digit in our result. 
Result so far: 112929.71262699
Subtract 6201 from 6590 to get 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

The quotient of the division is 112929.71262699, and the remainder is 3.89e-07.