We look at the division of 67278529 by 921 
The aim is to understand the frequency of 921 in 67278529.

Advancing to step 1:
The number 921 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 921

Going ahead to step 2:
If we divide 67 by 921, we get 0 and a remainder of 67.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 67 to get 67.
Grab the next digit (2) from the dividend, add it to 67, then carry on: 672 / 921

Step 3:
The number 921 fits into 672 0 times, leaving a remainder of 672.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 672 leaves us with 672.
Take the next digit (7) from the dividend and append it to 672, then repeat: 6727 / 921

Going ahead to step 4:
If we divide 6727 by 921, we get 7 and a remainder of 280.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 6447 away from 6727, we end up with 280.
Take the next digit (8) from the dividend and append it to 280, then repeat: 2808 / 921

Step 5:
2808 divided by 921 is 3 with a remainder of 45.
The number 3 becomes the next digit in our result. 
Result so far: 73.0
Subtracting 2763 from 2808 leaves us with 45.
Take the next digit (5) from the dividend and append it to 45, then repeat: 455 / 921

Advancing to step 6:
455 divided by 921 is 0 with a remainder of 455.
Put 0 as the next digit of the answer. 
Result so far: 730.0
If we take 0 away from 455, we end up with 455.
Append the next digit (2) from the dividend to 455 and continue with: 4552 / 921

Advancing to step 7:
921 goes into 4552 4 times with a remainder of 868.
Record the quotient 4 as the next digit in the result. 
Result so far: 7304.0
If we take 3684 away from 4552, we end up with 868.
Append the next digit (9) from the dividend to 868 and continue with: 8689 / 921

Advancing to step 8:
8689 divided by 921 is 9 with a remainder of 400.
Use 9 as the next digit of our solution. 
Result so far: 73049.0
Subtracting 8289 from 8689 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 9:
921 goes into 4000 4 times with a remainder of 316.
Record the quotient 4 as the next digit in the result. 
Result so far: 73049.4
The remainder is 316 after subtracting 3684 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Going ahead to step 10:
921 can be fit into 3160 3 times, resulting in a remainder of 397.
Put 3 as the next digit of the answer. 
Result so far: 73049.43
Deduct 2763 from 3160 and we're left with 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

Advancing to step 11:
3970 divided by 921 is 4 with a remainder of 286.
Put 4 as the next digit of the answer. 
Result so far: 73049.434
Subtract 3684 from 3970 to get 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Step 12:
2860 divided by 921 is 3 with a remainder of 97.
Use 3 as the next digit of our solution. 
Result so far: 73049.4343
If we take 2763 away from 2860, we end up with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Let's proceed to step 13:
If we divide 970 by 921, we get 1 and a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 73049.43431
If we subtract 921 from 970, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 14:
The number 921 fits into 490 0 times, leaving a remainder of 490.
The next digit of our result is 0. 
Result so far: 73049.43431
Deduct 0 from 490 and we're left with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Going ahead to step 15:
When dividing 4900 by 921, we get 5 with a remainder of 295.
Put 5 as the next digit of the answer. 
Result so far: 73049.4343105
Deduct 4605 from 4900 and we're left with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Moving on to step 16:
The number 921 fits into 2950 3 times, leaving a remainder of 187.
Use 3 as the next digit of our solution. 
Result so far: 73049.43431053
Subtracting 2763 from 2950 leaves us with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Our division results in 73049.43431053 with a remaining 1.87e-07.