77471068 ÷ 321 
The aim is to understand the frequency of 321 in 77471068.

Going ahead to step 1:
If we divide 7 by 321, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 321

On to step 2:
When dividing 77 by 321, we get 0 with a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Append the next digit (4) from the dividend to 77 and continue with: 774 / 321

Advancing to step 3:
If we divide 774 by 321, we get 2 and a remainder of 132.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 642 from 774 leaves us with 132.
Fetch the next digit (7) from the dividend, attach it to 132 and continue: 1327 / 321

Moving on to step 4:
1327 divided by 321 is 4 with a remainder of 43.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
The remainder is 43 after subtracting 1284 from 1327.
Grab the next digit (1) from the dividend, add it to 43, then carry on: 431 / 321

Step 5:
The number 321 fits into 431 1 times, leaving a remainder of 110.
Use 1 as the next digit of our solution. 
Result so far: 241.0
The remainder is 110 after subtracting 321 from 431.
Take the next digit (0) from the dividend and append it to 110, then repeat: 1100 / 321

On to step 6:
The number 321 fits into 1100 3 times, leaving a remainder of 137.
The number 3 becomes the next digit in our result. 
Result so far: 2413.0
If we subtract 963 from 1100, we get 137.
Fetch the next digit (6) from the dividend, attach it to 137 and continue: 1376 / 321

Going ahead to step 7:
If we divide 1376 by 321, we get 4 and a remainder of 92.
The next digit of our result is 4. 
Result so far: 24134.0
Subtracting 1284 from 1376 leaves us with 92.
Grab the next digit (8) from the dividend, add it to 92, then carry on: 928 / 321

Going ahead to step 8:
The number 321 fits into 928 2 times, leaving a remainder of 286.
The next digit of our result is 2. 
Result so far: 241342.0
The remainder is 286 after subtracting 642 from 928.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Advancing to step 9:
If we divide 2860 by 321, we get 8 and a remainder of 292.
Use 8 as the next digit of our solution. 
Result so far: 241342.8
If we take 2568 away from 2860, we end up with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Step 10:
321 goes into 2920 9 times with a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 241342.89
If we take 2889 away from 2920, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 11:
310 divided by 321 is 0 with a remainder of 310.
Put 0 as the next digit of the answer. 
Result so far: 241342.89
Deduct 0 from 310 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 12:
3100 divided by 321 is 9 with a remainder of 211.
The number 9 becomes the next digit in our result. 
Result so far: 241342.8909
If we subtract 2889 from 3100, we get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Going ahead to step 13:
321 goes into 2110 6 times with a remainder of 184.
Put 6 as the next digit of the answer. 
Result so far: 241342.89096
Subtracting 1926 from 2110 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Step 14:
1840 divided by 321 is 5 with a remainder of 235.
The number 5 becomes the next digit in our result. 
Result so far: 241342.890965
Subtracting 1605 from 1840 leaves us with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Moving on to step 15:
321 goes into 2350 7 times with a remainder of 103.
The next digit of our result is 7. 
Result so far: 241342.8909657
Subtract 2247 from 2350 to get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 16:
321 goes into 1030 3 times with a remainder of 67.
The next digit of our result is 3. 
Result so far: 241342.89096573
Subtracting 963 from 1030 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

After the division, we end up with 241342.89096573 and a remainder of 6.7e-08.