We divide 63172429 by 321
The aim is to understand the frequency of 321 in 63172429.

Step 1:
321 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 321

Moving on to step 2:
321 goes into 63 0 times with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Grab the next digit (1) from the dividend, add it to 63, then carry on: 631 / 321

Going ahead to step 3:
If we divide 631 by 321, we get 1 and a remainder of 310.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 321 from 631, we get 310.
Fetch the next digit (7) from the dividend, attach it to 310 and continue: 3107 / 321

Step 4:
3107 divided by 321 is 9 with a remainder of 218.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we take 2889 away from 3107, we end up with 218.
Grab the next digit (2) from the dividend, add it to 218, then carry on: 2182 / 321

On to step 5:
The number 321 fits into 2182 6 times, leaving a remainder of 256.
The number 6 becomes the next digit in our result. 
Result so far: 196.0
Deduct 1926 from 2182 and we're left with 256.
Include the next digit (4) from the dividend after 256, then repeat: 2564 / 321

On to step 6:
321 can be fit into 2564 7 times, resulting in a remainder of 317.
Use 7 as the next digit of our solution. 
Result so far: 1967.0
If we subtract 2247 from 2564, we get 317.
Append the next digit (2) from the dividend to 317 and continue with: 3172 / 321

Advancing to step 7:
When dividing 3172 by 321, we get 9 with a remainder of 283.
The next digit of our result is 9. 
Result so far: 19679.0
Deduct 2889 from 3172 and we're left with 283.
Include the next digit (9) from the dividend after 283, then repeat: 2839 / 321

Advancing to step 8:
321 goes into 2839 8 times with a remainder of 271.
Write down 8 as next digit of the result. 
Result so far: 196798.0
If we take 2568 away from 2839, we end up with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

On to step 9:
321 can be fit into 2710 8 times, resulting in a remainder of 142.
Use 8 as the next digit of our solution. 
Result so far: 196798.8
If we subtract 2568 from 2710, we get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Step 10:
321 goes into 1420 4 times with a remainder of 136.
Put 4 as the next digit of the answer. 
Result so far: 196798.84
Subtract 1284 from 1420 to get 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 11:
321 goes into 1360 4 times with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 196798.844
If we subtract 1284 from 1360, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The quotient of the division is 196798.844, and the remainder is 0.0076.