75379089 divided by 921 
The aim is to understand the frequency of 921 in 75379089.

Moving on to step 1:
The number 921 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 921

Step 2:
The number 921 fits into 75 0 times, leaving a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 75 after subtracting 0 from 75.
Fetch the next digit (3) from the dividend, attach it to 75 and continue: 753 / 921

Moving on to step 3:
753 divided by 921 is 0 with a remainder of 753.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 753 to get 753.
Grab the next digit (7) from the dividend, add it to 753, then carry on: 7537 / 921

Going ahead to step 4:
921 can be fit into 7537 8 times, resulting in a remainder of 169.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 7368 from 7537 to get 169.
Append the next digit (9) from the dividend to 169 and continue with: 1699 / 921

Let's proceed to step 5:
921 goes into 1699 1 times with a remainder of 778.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
The remainder is 778 after subtracting 921 from 1699.
Take the next digit (0) from the dividend and append it to 778, then repeat: 7780 / 921

Moving on to step 6:
If we divide 7780 by 921, we get 8 and a remainder of 412.
Record the quotient 8 as the next digit in the result. 
Result so far: 818.0
Deduct 7368 from 7780 and we're left with 412.
Bring next digit (8) of the dividend behind the 412 and repeat the process: 4128 / 921

On to step 7:
When dividing 4128 by 921, we get 4 with a remainder of 444.
Put 4 as the next digit of the answer. 
Result so far: 8184.0
The remainder is 444 after subtracting 3684 from 4128.
Take the next digit (9) from the dividend and append it to 444, then repeat: 4449 / 921

Advancing to step 8:
The number 921 fits into 4449 4 times, leaving a remainder of 765.
Put 4 as the next digit of the answer. 
Result so far: 81844.0
If we subtract 3684 from 4449, we get 765.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7650, and continue the process.

Advancing to step 9:
If we divide 7650 by 921, we get 8 and a remainder of 282.
Record the quotient 8 as the next digit in the result. 
Result so far: 81844.8
Deduct 7368 from 7650 and we're left with 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Let's proceed to step 10:
2820 divided by 921 is 3 with a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 81844.83
The remainder is 57 after subtracting 2763 from 2820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 11:
570 divided by 921 is 0 with a remainder of 570.
Use 0 as the next digit of our solution. 
Result so far: 81844.83
If we take 0 away from 570, we end up with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Going ahead to step 12:
The number 921 fits into 5700 6 times, leaving a remainder of 174.
The next digit of our result is 6. 
Result so far: 81844.8306
If we subtract 5526 from 5700, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Going ahead to step 13:
When dividing 1740 by 921, we get 1 with a remainder of 819.
The number 1 becomes the next digit in our result. 
Result so far: 81844.83061
Deduct 921 from 1740 and we're left with 819.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8190, and continue the process.

Moving on to step 14:
The number 921 fits into 8190 8 times, leaving a remainder of 822.
Record the quotient 8 as the next digit in the result. 
Result so far: 81844.830618
If we subtract 7368 from 8190, we get 822.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8220, and continue the process.

Moving on to step 15:
921 goes into 8220 8 times with a remainder of 852.
Use 8 as the next digit of our solution. 
Result so far: 81844.8306188
If we take 7368 away from 8220, we end up with 852.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8520, and continue the process.

After the division, we end up with 81844.8306188 and a remainder of 8.52e-06.