We're dividing 2549401 by 687 
The aim is to understand the frequency of 687 in 2549401.

Going ahead to step 1:
2 divided by 687 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 687

On to step 2:
25 divided by 687 is 0 with a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Grab the next digit (4) from the dividend, add it to 25, then carry on: 254 / 687

On to step 3:
The number 687 fits into 254 0 times, leaving a remainder of 254.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 254 and we're left with 254.
Fetch the next digit (9) from the dividend, attach it to 254 and continue: 2549 / 687

Advancing to step 4:
687 goes into 2549 3 times with a remainder of 488.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 488 after subtracting 2061 from 2549.
Fetch the next digit (4) from the dividend, attach it to 488 and continue: 4884 / 687

Advancing to step 5:
4884 divided by 687 is 7 with a remainder of 75.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we take 4809 away from 4884, we end up with 75.
Bring next digit (0) of the dividend behind the 75 and repeat the process: 750 / 687

On to step 6:
When dividing 750 by 687, we get 1 with a remainder of 63.
Put 1 as the next digit of the answer. 
Result so far: 371.0
The remainder is 63 after subtracting 687 from 750.
Append the next digit (1) from the dividend to 63 and continue with: 631 / 687

Let's proceed to step 7:
687 goes into 631 0 times with a remainder of 631.
The number 0 becomes the next digit in our result. 
Result so far: 3710.0
Subtract 0 from 631 to get 631.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6310, and continue the process.

On to step 8:
If we divide 6310 by 687, we get 9 and a remainder of 127.
Put 9 as the next digit of the answer. 
Result so far: 3710.9
Deduct 6183 from 6310 and we're left with 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Advancing to step 9:
687 goes into 1270 1 times with a remainder of 583.
The next digit of our result is 1. 
Result so far: 3710.91
Deduct 687 from 1270 and we're left with 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Advancing to step 10:
The number 687 fits into 5830 8 times, leaving a remainder of 334.
Put 8 as the next digit of the answer. 
Result so far: 3710.918
If we take 5496 away from 5830, we end up with 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

On to step 11:
If we divide 3340 by 687, we get 4 and a remainder of 592.
Write down 4 as next digit of the result. 
Result so far: 3710.9184
Subtracting 2748 from 3340 leaves us with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Step 12:
687 goes into 5920 8 times with a remainder of 424.
Put 8 as the next digit of the answer. 
Result so far: 3710.91848
If we subtract 5496 from 5920, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

On to step 13:
If we divide 4240 by 687, we get 6 and a remainder of 118.
The next digit of our result is 6. 
Result so far: 3710.918486
Deduct 4122 from 4240 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Let's proceed to step 14:
The number 687 fits into 1180 1 times, leaving a remainder of 493.
The next digit of our result is 1. 
Result so far: 3710.9184861
Subtracting 687 from 1180 leaves us with 493.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

Advancing to step 15:
When dividing 4930 by 687, we get 7 with a remainder of 121.
Put 7 as the next digit of the answer. 
Result so far: 3710.91848617
If we take 4809 away from 4930, we end up with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Our division results in 3710.91848617 with a remaining 1.21e-07.