We look at the division of 66091500 by 884 
The aim is to understand the frequency of 884 in 66091500.

On to step 1:
When dividing 6 by 884, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 884

On to step 2:
884 can be fit into 66 0 times, resulting in a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Append the next digit (0) from the dividend to 66 and continue with: 660 / 884

On to step 3:
The number 884 fits into 660 0 times, leaving a remainder of 660.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 660 leaves us with 660.
Grab the next digit (9) from the dividend, add it to 660, then carry on: 6609 / 884

Moving on to step 4:
When dividing 6609 by 884, we get 7 with a remainder of 421.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 421 after subtracting 6188 from 6609.
Take the next digit (1) from the dividend and append it to 421, then repeat: 4211 / 884

Advancing to step 5:
The number 884 fits into 4211 4 times, leaving a remainder of 675.
Put 4 as the next digit of the answer. 
Result so far: 74.0
Deduct 3536 from 4211 and we're left with 675.
Include the next digit (5) from the dividend after 675, then repeat: 6755 / 884

Moving on to step 6:
If we divide 6755 by 884, we get 7 and a remainder of 567.
Put 7 as the next digit of the answer. 
Result so far: 747.0
If we take 6188 away from 6755, we end up with 567.
Append the next digit (0) from the dividend to 567 and continue with: 5670 / 884

Step 7:
884 goes into 5670 6 times with a remainder of 366.
Write down 6 as next digit of the result. 
Result so far: 7476.0
Subtracting 5304 from 5670 leaves us with 366.
Include the next digit (0) from the dividend after 366, then repeat: 3660 / 884

Step 8:
884 goes into 3660 4 times with a remainder of 124.
Write down 4 as next digit of the result. 
Result so far: 74764.0
If we subtract 3536 from 3660, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Advancing to step 9:
884 goes into 1240 1 times with a remainder of 356.
Use 1 as the next digit of our solution. 
Result so far: 74764.1
If we take 884 away from 1240, we end up with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Let's proceed to step 10:
884 can be fit into 3560 4 times, resulting in a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 74764.14
Subtracting 3536 from 3560 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 11:
884 goes into 240 0 times with a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 74764.14
Subtracting 0 from 240 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
When dividing 2400 by 884, we get 2 with a remainder of 632.
Record the quotient 2 as the next digit in the result. 
Result so far: 74764.1402
Deduct 1768 from 2400 and we're left with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

On to step 13:
884 can be fit into 6320 7 times, resulting in a remainder of 132.
Use 7 as the next digit of our solution. 
Result so far: 74764.14027
If we take 6188 away from 6320, we end up with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Moving on to step 14:
884 goes into 1320 1 times with a remainder of 436.
Record the quotient 1 as the next digit in the result. 
Result so far: 74764.140271
Subtract 884 from 1320 to get 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Moving on to step 15:
If we divide 4360 by 884, we get 4 and a remainder of 824.
The number 4 becomes the next digit in our result. 
Result so far: 74764.1402714
Subtract 3536 from 4360 to get 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Going ahead to step 16:
If we divide 8240 by 884, we get 9 and a remainder of 284.
Write down 9 as next digit of the result. 
Result so far: 74764.14027149
Deduct 7956 from 8240 and we're left with 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

After the division, we end up with 74764.14027149 and a remainder of 2.84e-07.