We're dividing 63843704 by 971 
The aim is to understand the frequency of 971 in 63843704.

Advancing to step 1:
971 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 971

On to step 2:
The number 971 fits into 63 0 times, leaving a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 971

Advancing to step 3:
The number 971 fits into 638 0 times, leaving a remainder of 638.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 638 and we're left with 638.
Grab the next digit (4) from the dividend, add it to 638, then carry on: 6384 / 971

Moving on to step 4:
The number 971 fits into 6384 6 times, leaving a remainder of 558.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 5826 from 6384, we get 558.
Bring next digit (3) of the dividend behind the 558 and repeat the process: 5583 / 971

Moving on to step 5:
971 goes into 5583 5 times with a remainder of 728.
Use 5 as the next digit of our solution. 
Result so far: 65.0
Subtracting 4855 from 5583 leaves us with 728.
Include the next digit (7) from the dividend after 728, then repeat: 7287 / 971

Going ahead to step 6:
971 goes into 7287 7 times with a remainder of 490.
The number 7 becomes the next digit in our result. 
Result so far: 657.0
The remainder is 490 after subtracting 6797 from 7287.
Bring next digit (0) of the dividend behind the 490 and repeat the process: 4900 / 971

Going ahead to step 7:
When dividing 4900 by 971, we get 5 with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 6575.0
If we take 4855 away from 4900, we end up with 45.
Fetch the next digit (4) from the dividend, attach it to 45 and continue: 454 / 971

Step 8:
If we divide 454 by 971, we get 0 and a remainder of 454.
The number 0 becomes the next digit in our result. 
Result so far: 65750.0
Deduct 0 from 454 and we're left with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Moving on to step 9:
971 goes into 4540 4 times with a remainder of 656.
Write down 4 as next digit of the result. 
Result so far: 65750.4
Subtracting 3884 from 4540 leaves us with 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Step 10:
If we divide 6560 by 971, we get 6 and a remainder of 734.
The next digit of our result is 6. 
Result so far: 65750.46
Subtracting 5826 from 6560 leaves us with 734.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7340, and continue the process.

Advancing to step 11:
971 can be fit into 7340 7 times, resulting in a remainder of 543.
The next digit of our result is 7. 
Result so far: 65750.467
Deduct 6797 from 7340 and we're left with 543.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5430, and continue the process.

Let's proceed to step 12:
When dividing 5430 by 971, we get 5 with a remainder of 575.
Use 5 as the next digit of our solution. 
Result so far: 65750.4675
Subtracting 4855 from 5430 leaves us with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

On to step 13:
5750 divided by 971 is 5 with a remainder of 895.
Record the quotient 5 as the next digit in the result. 
Result so far: 65750.46755
Deduct 4855 from 5750 and we're left with 895.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8950, and continue the process.

The final outcome is 65750.46755, with a leftover of 0.000895.