We're dividing 7968741 by 840 
The aim is to understand the frequency of 840 in 7968741.

Step 1:
840 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 840

Advancing to step 2:
The number 840 fits into 79 0 times, leaving a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 79, we end up with 79.
Take the next digit (6) from the dividend and append it to 79, then repeat: 796 / 840

Let's proceed to step 3:
840 goes into 796 0 times with a remainder of 796.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 796 and we're left with 796.
Fetch the next digit (8) from the dividend, attach it to 796 and continue: 7968 / 840

On to step 4:
The number 840 fits into 7968 9 times, leaving a remainder of 408.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 7560 from 7968 to get 408.
Append the next digit (7) from the dividend to 408 and continue with: 4087 / 840

Moving on to step 5:
840 goes into 4087 4 times with a remainder of 727.
Record the quotient 4 as the next digit in the result. 
Result so far: 94.0
If we take 3360 away from 4087, we end up with 727.
Grab the next digit (4) from the dividend, add it to 727, then carry on: 7274 / 840

Step 6:
When dividing 7274 by 840, we get 8 with a remainder of 554.
Use 8 as the next digit of our solution. 
Result so far: 948.0
Subtracting 6720 from 7274 leaves us with 554.
Append the next digit (1) from the dividend to 554 and continue with: 5541 / 840

Moving on to step 7:
If we divide 5541 by 840, we get 6 and a remainder of 501.
Record the quotient 6 as the next digit in the result. 
Result so far: 9486.0
Deduct 5040 from 5541 and we're left with 501.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

Advancing to step 8:
840 can be fit into 5010 5 times, resulting in a remainder of 810.
Record the quotient 5 as the next digit in the result. 
Result so far: 9486.5
Subtract 4200 from 5010 to get 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8100, and continue the process.

Going ahead to step 9:
The number 840 fits into 8100 9 times, leaving a remainder of 540.
Write down 9 as next digit of the result. 
Result so far: 9486.59
If we subtract 7560 from 8100, we get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Going ahead to step 10:
840 goes into 5400 6 times with a remainder of 360.
The number 6 becomes the next digit in our result. 
Result so far: 9486.596
If we take 5040 away from 5400, we end up 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.

Moving on to step 11:
If we divide 3600 by 840, we get 4 and a remainder of 240.
Write down 4 as next digit of the result. 
Result so far: 9486.5964
Deduct 3360 from 3600 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
If we divide 2400 by 840, we get 2 and a remainder of 720.
Record the quotient 2 as the next digit in the result. 
Result so far: 9486.59642
The remainder is 720 after subtracting 1680 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Advancing to step 13:
If we divide 7200 by 840, we get 8 and a remainder of 480.
The next digit of our result is 8. 
Result so far: 9486.596428
If we subtract 6720 from 7200, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 14:
The number 840 fits into 4800 5 times, leaving a remainder of 600.
The number 5 becomes the next digit in our result. 
Result so far: 9486.5964285
If we take 4200 away from 4800, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 15:
6000 divided by 840 is 7 with a remainder of 120.
Put 7 as the next digit of the answer. 
Result so far: 9486.59642857
Subtracting 5880 from 6000 leaves us 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.

In conclusion, the division gives 9486.59642857 with a balance of 1.2e-07.