991090 ÷ 89 
The aim is to understand the frequency of 89 in 991090.

Let's proceed to step 1:
The number 89 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 89

Let's proceed to step 2:
When dividing 99 by 89, we get 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 89 from 99 and we're left with 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 89

Step 3:
89 can be fit into 101 1 times, resulting in a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we take 89 away from 101, we end up with 12.
Bring next digit (0) of the dividend behind the 12 and repeat the process: 120 / 89

Step 4:
89 goes into 120 1 times with a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 111.0
Subtracting 89 from 120 leaves us with 31.
Take the next digit (9) from the dividend and append it to 31, then repeat: 319 / 89

Let's proceed to step 5:
When dividing 319 by 89, we get 3 with a remainder of 52.
Put 3 as the next digit of the answer. 
Result so far: 1113.0
Subtract 267 from 319 to get 52.
Include the next digit (0) from the dividend after 52, then repeat: 520 / 89

Advancing to step 6:
When dividing 520 by 89, we get 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 11135.0
Subtracting 445 from 520 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 7:
89 goes into 750 8 times with a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 11135.8
The remainder is 38 after subtracting 712 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 8:
89 goes into 380 4 times with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 11135.84
Deduct 356 from 380 and we're left 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.

Let's proceed to step 9:
The number 89 fits into 240 2 times, leaving a remainder of 62.
Record the quotient 2 as the next digit in the result. 
Result so far: 11135.842
Deduct 178 from 240 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 10:
If we divide 620 by 89, we get 6 and a remainder of 86.
Write down 6 as next digit of the result. 
Result so far: 11135.8426
Subtract 534 from 620 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Let's proceed to step 11:
The number 89 fits into 860 9 times, leaving a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 11135.84269
Deduct 801 from 860 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 12:
The number 89 fits into 590 6 times, leaving a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 11135.842696
Subtracting 534 from 590 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 13:
89 can be fit into 560 6 times, resulting in a remainder of 26.
Record the quotient 6 as the next digit in the result. 
Result so far: 11135.8426966
If we take 534 away from 560, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The quotient of the division is 11135.8426966, and the remainder is 2.6e-07.