Let's divide 15516420 by 689
The aim is to understand the frequency of 689 in 15516420.

Moving on to step 1:
689 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 689

Moving on to step 2:
689 goes into 15 0 times with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Fetch the next digit (5) from the dividend, attach it to 15 and continue: 155 / 689

Advancing to step 3:
689 can be fit into 155 0 times, resulting in a remainder of 155.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 155, we end up with 155.
Append the next digit (1) from the dividend to 155 and continue with: 1551 / 689

Let's proceed to step 4:
689 can be fit into 1551 2 times, resulting in a remainder of 173.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1378 from 1551 to get 173.
Fetch the next digit (6) from the dividend, attach it to 173 and continue: 1736 / 689

Going ahead to step 5:
689 goes into 1736 2 times with a remainder of 358.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
If we subtract 1378 from 1736, we get 358.
Fetch the next digit (4) from the dividend, attach it to 358 and continue: 3584 / 689

Advancing to step 6:
3584 divided by 689 is 5 with a remainder of 139.
The number 5 becomes the next digit in our result. 
Result so far: 225.0
If we subtract 3445 from 3584, we get 139.
Grab the next digit (2) from the dividend, add it to 139, then carry on: 1392 / 689

Step 7:
If we divide 1392 by 689, we get 2 and a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 2252.0
If we subtract 1378 from 1392, we get 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 689

Let's proceed to step 8:
The number 689 fits into 140 0 times, leaving a remainder of 140.
The next digit of our result is 0. 
Result so far: 22520.0
The remainder is 140 after subtracting 0 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 9:
If we divide 1400 by 689, we get 2 and a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 22520.2
Subtracting 1378 from 1400 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 10:
689 can be fit into 220 0 times, resulting in a remainder of 220.
Record the quotient 0 as the next digit in the result. 
Result so far: 22520.2
If we take 0 away from 220, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Going ahead to step 11:
When dividing 2200 by 689, we get 3 with a remainder of 133.
Use 3 as the next digit of our solution. 
Result so far: 22520.203
The remainder is 133 after subtracting 2067 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Going ahead to step 12:
The number 689 fits into 1330 1 times, leaving a remainder of 641.
The next digit of our result is 1. 
Result so far: 22520.2031
The remainder is 641 after subtracting 689 from 1330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6410, and continue the process.

Let's proceed to step 13:
689 goes into 6410 9 times with a remainder of 209.
Write down 9 as next digit of the result. 
Result so far: 22520.20319
Deduct 6201 from 6410 and we're left with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Step 14:
If we divide 2090 by 689, we get 3 and a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 22520.203193
The remainder is 23 after subtracting 2067 from 2090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 15:
If we divide 230 by 689, we get 0 and a remainder of 230.
The next digit of our result is 0. 
Result so far: 22520.203193
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 16:
2300 divided by 689 is 3 with a remainder of 233.
The next digit of our result is 3. 
Result so far: 22520.20319303
Subtract 2067 from 2300 to get 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

The quotient of the division is 22520.20319303, and the remainder is 2.33e-07.