We're dividing 98164783 by 646 
The aim is to understand the frequency of 646 in 98164783.

On to step 1:
If we divide 9 by 646, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 646

Advancing to step 2:
98 divided by 646 is 0 with a remainder of 98.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 98 to get 98.
Take the next digit (1) from the dividend and append it to 98, then repeat: 981 / 646

Let's proceed to step 3:
When dividing 981 by 646, we get 1 with a remainder of 335.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 646 from 981 to get 335.
Grab the next digit (6) from the dividend, add it to 335, then carry on: 3356 / 646

Let's proceed to step 4:
3356 divided by 646 is 5 with a remainder of 126.
The next digit of our result is 5. 
Result so far: 15.0
If we take 3230 away from 3356, we end up with 126.
Append the next digit (4) from the dividend to 126 and continue with: 1264 / 646

Advancing to step 5:
646 can be fit into 1264 1 times, resulting in a remainder of 618.
The next digit of our result is 1. 
Result so far: 151.0
If we take 646 away from 1264, we end up with 618.
Take the next digit (7) from the dividend and append it to 618, then repeat: 6187 / 646

Advancing to step 6:
When dividing 6187 by 646, we get 9 with a remainder of 373.
Use 9 as the next digit of our solution. 
Result so far: 1519.0
Subtract 5814 from 6187 to get 373.
Append the next digit (8) from the dividend to 373 and continue with: 3738 / 646

Moving on to step 7:
3738 divided by 646 is 5 with a remainder of 508.
Write down 5 as next digit of the result. 
Result so far: 15195.0
If we subtract 3230 from 3738, we get 508.
Append the next digit (3) from the dividend to 508 and continue with: 5083 / 646

Let's proceed to step 8:
646 can be fit into 5083 7 times, resulting in a remainder of 561.
Use 7 as the next digit of our solution. 
Result so far: 151957.0
Deduct 4522 from 5083 and we're left with 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

On to step 9:
When dividing 5610 by 646, we get 8 with a remainder of 442.
Put 8 as the next digit of the answer. 
Result so far: 151957.8
The remainder is 442 after subtracting 5168 from 5610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

Going ahead to step 10:
When dividing 4420 by 646, we get 6 with a remainder of 544.
Write down 6 as next digit of the result. 
Result so far: 151957.86
Subtracting 3876 from 4420 leaves us with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Step 11:
646 goes into 5440 8 times with a remainder of 272.
The number 8 becomes the next digit in our result. 
Result so far: 151957.868
If we subtract 5168 from 5440, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Moving on to step 12:
When dividing 2720 by 646, we get 4 with a remainder of 136.
Use 4 as the next digit of our solution. 
Result so far: 151957.8684
Subtracting 2584 from 2720 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Step 13:
646 can be fit into 1360 2 times, resulting in a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 151957.86842
Subtracting 1292 from 1360 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 14:
646 can be fit into 680 1 times, resulting in a remainder of 34.
The number 1 becomes the next digit in our result. 
Result so far: 151957.868421
If we subtract 646 from 680, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 15:
646 can be fit into 340 0 times, resulting in a remainder of 340.
Write down 0 as next digit of the result. 
Result so far: 151957.868421
If we subtract 0 from 340, we get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Moving on to step 16:
3400 divided by 646 is 5 with a remainder of 170.
Put 5 as the next digit of the answer. 
Result so far: 151957.86842105
If we take 3230 away from 3400, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

The final outcome is 151957.86842105, with a leftover of 1.7e-07.