We're dividing 18377849 by 680 
The aim is to understand the frequency of 680 in 18377849.

On to step 1:
The number 680 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 680

On to step 2:
680 goes into 18 0 times with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Append the next digit (3) from the dividend to 18 and continue with: 183 / 680

Step 3:
The number 680 fits into 183 0 times, leaving a remainder of 183.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 183 to get 183.
Append the next digit (7) from the dividend to 183 and continue with: 1837 / 680

Going ahead to step 4:
If we divide 1837 by 680, we get 2 and a remainder of 477.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 1360 from 1837, we get 477.
Take the next digit (7) from the dividend and append it to 477, then repeat: 4777 / 680

Going ahead to step 5:
680 can be fit into 4777 7 times, resulting in a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
Deduct 4760 from 4777 and we're left with 17.
Grab the next digit (8) from the dividend, add it to 17, then carry on: 178 / 680

Going ahead to step 6:
When dividing 178 by 680, we get 0 with a remainder of 178.
Write down 0 as next digit of the result. 
Result so far: 270.0
The remainder is 178 after subtracting 0 from 178.
Grab the next digit (4) from the dividend, add it to 178, then carry on: 1784 / 680

Going ahead to step 7:
The number 680 fits into 1784 2 times, leaving a remainder of 424.
Write down 2 as next digit of the result. 
Result so far: 2702.0
The remainder is 424 after subtracting 1360 from 1784.
Take the next digit (9) from the dividend and append it to 424, then repeat: 4249 / 680

Going ahead to step 8:
680 goes into 4249 6 times with a remainder of 169.
Record the quotient 6 as the next digit in the result. 
Result so far: 27026.0
If we take 4080 away from 4249, we end up with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

Step 9:
The number 680 fits into 1690 2 times, leaving a remainder of 330.
The number 2 becomes the next digit in our result. 
Result so far: 27026.2
The remainder is 330 after subtracting 1360 from 1690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 10:
If we divide 3300 by 680, we get 4 and a remainder of 580.
Use 4 as the next digit of our solution. 
Result so far: 27026.24
Subtract 2720 from 3300 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Let's proceed to step 11:
If we divide 5800 by 680, we get 8 and a remainder of 360.
The number 8 becomes the next digit in our result. 
Result so far: 27026.248
Deduct 5440 from 5800 and we're left with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 12:
3600 divided by 680 is 5 with a remainder of 200.
The next digit of our result is 5. 
Result so far: 27026.2485
If we take 3400 away from 3600, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 13:
680 goes into 2000 2 times with a remainder of 640.
Record the quotient 2 as the next digit in the result. 
Result so far: 27026.24852
Subtracting 1360 from 2000 leaves us with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 14:
The number 680 fits into 6400 9 times, leaving a remainder of 280.
Write down 9 as next digit of the result. 
Result so far: 27026.248529
Subtracting 6120 from 6400 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 15:
2800 divided by 680 is 4 with a remainder of 80.
The number 4 becomes the next digit in our result. 
Result so far: 27026.2485294
Deduct 2720 from 2800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 16:
800 divided by 680 is 1 with a remainder of 120.
The number 1 becomes the next digit in our result. 
Result so far: 27026.24852941
Deduct 680 from 800 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

The quotient of the division is 27026.24852941, and the remainder is 1.2e-07.