646564 divided by 84 
The aim is to understand the frequency of 84 in 646564.

Moving on to step 1:
84 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 84

Moving on to step 2:
If we divide 64 by 84, we get 0 and a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Fetch the next digit (6) from the dividend, attach it to 64 and continue: 646 / 84

On to step 3:
84 can be fit into 646 7 times, resulting in a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 588 from 646 to get 58.
Bring next digit (5) of the dividend behind the 58 and repeat the process: 585 / 84

Moving on to step 4:
If we divide 585 by 84, we get 6 and a remainder of 81.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
Subtract 504 from 585 to get 81.
Append the next digit (6) from the dividend to 81 and continue with: 816 / 84

Step 5:
816 divided by 84 is 9 with a remainder of 60.
Put 9 as the next digit of the answer. 
Result so far: 769.0
If we take 756 away from 816, we end up with 60.
Grab the next digit (4) from the dividend, add it to 60, then carry on: 604 / 84

Let's proceed to step 6:
84 goes into 604 7 times with a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 7697.0
Deduct 588 from 604 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 7:
84 can be fit into 160 1 times, resulting in a remainder of 76.
Use 1 as the next digit of our solution. 
Result so far: 7697.1
The remainder is 76 after subtracting 84 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 8:
84 can be fit into 760 9 times, resulting in a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 7697.19
If we subtract 756 from 760, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
84 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 7697.19
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
If we divide 400 by 84, we get 4 and a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 7697.1904
Deduct 336 from 400 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 11:
84 goes into 640 7 times with a remainder of 52.
Put 7 as the next digit of the answer. 
Result so far: 7697.19047
If we take 588 away from 640, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 12:
When dividing 520 by 84, we get 6 with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 7697.190476
Subtracting 504 from 520 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 13:
160 divided by 84 is 1 with a remainder of 76.
Write down 1 as next digit of the result. 
Result so far: 7697.1904761
Subtracting 84 from 160 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 14:
760 divided by 84 is 9 with a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 7697.19047619
If we take 756 away from 760, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 7697.19047619, and the remainder is 4e-09.