64972143 divided by 84 
The aim is to understand the frequency of 84 in 64972143.

Advancing to step 1:
When dividing 6 by 84, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 84

Going ahead to step 2:
If we divide 64 by 84, we get 0 and a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Fetch the next digit (9) from the dividend, attach it to 64 and continue: 649 / 84

Let's proceed to step 3:
649 divided by 84 is 7 with a remainder of 61.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 588 from 649 to get 61.
Append the next digit (7) from the dividend to 61 and continue with: 617 / 84

Let's proceed to step 4:
If we divide 617 by 84, we get 7 and a remainder of 29.
The number 7 becomes the next digit in our result. 
Result so far: 77.0
Subtracting 588 from 617 leaves us with 29.
Take the next digit (2) from the dividend and append it to 29, then repeat: 292 / 84

On to step 5:
84 can be fit into 292 3 times, resulting in a remainder of 40.
Put 3 as the next digit of the answer. 
Result so far: 773.0
If we subtract 252 from 292, we get 40.
Bring next digit (1) of the dividend behind the 40 and repeat the process: 401 / 84

On to step 6:
The number 84 fits into 401 4 times, leaving a remainder of 65.
Record the quotient 4 as the next digit in the result. 
Result so far: 7734.0
Deduct 336 from 401 and we're left with 65.
Grab the next digit (4) from the dividend, add it to 65, then carry on: 654 / 84

Moving on to step 7:
84 can be fit into 654 7 times, resulting in a remainder of 66.
The number 7 becomes the next digit in our result. 
Result so far: 77347.0
If we subtract 588 from 654, we get 66.
Grab the next digit (3) from the dividend, add it to 66, then carry on: 663 / 84

Step 8:
84 can be fit into 663 7 times, resulting in a remainder of 75.
Put 7 as the next digit of the answer. 
Result so far: 773477.0
If we take 588 away from 663, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 9:
750 divided by 84 is 8 with a remainder of 78.
The number 8 becomes the next digit in our result. 
Result so far: 773477.8
Subtract 672 from 750 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 10:
84 can be fit into 780 9 times, resulting in a remainder of 24.
Write down 9 as next digit of the result. 
Result so far: 773477.89
The remainder is 24 after subtracting 756 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
If we divide 240 by 84, we get 2 and a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 773477.892
Subtract 168 from 240 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 12:
84 can be fit into 720 8 times, resulting in a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 773477.8928
Subtract 672 from 720 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 13:
84 goes into 480 5 times with a remainder of 60.
The next digit of our result is 5. 
Result so far: 773477.89285
The remainder is 60 after subtracting 420 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 14:
84 can be fit into 600 7 times, resulting in a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 773477.892857
The remainder is 12 after subtracting 588 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 15:
If we divide 120 by 84, we get 1 and a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 773477.8928571
If we subtract 84 from 120, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 16:
If we divide 360 by 84, we get 4 and a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 773477.89285714
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 773477.89285714, with a leftover of 2.4e-08.