881991 ÷ 73 
The aim is to understand the frequency of 73 in 881991.

Let's proceed to step 1:
73 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 73

Going ahead to step 2:
88 divided by 73 is 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 15 after subtracting 73 from 88.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 73

Let's proceed to step 3:
73 can be fit into 151 2 times, resulting in a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Subtracting 146 from 151 leaves us with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 73

Moving on to step 4:
The number 73 fits into 59 0 times, leaving a remainder of 59.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
If we subtract 0 from 59, we get 59.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 73

Moving on to step 5:
73 goes into 599 8 times with a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 1208.0
If we take 584 away from 599, we end up with 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 73

Let's proceed to step 6:
151 divided by 73 is 2 with a remainder of 5.
The next digit of our result is 2. 
Result so far: 12082.0
Subtracting 146 from 151 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
The number 73 fits into 50 0 times, leaving a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 12082.0
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
500 divided by 73 is 6 with a remainder of 62.
Use 6 as the next digit of our solution. 
Result so far: 12082.06
If we take 438 away from 500, we end up 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.

Going ahead to step 9:
620 divided by 73 is 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 12082.068
Subtract 584 from 620 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 10:
73 can be fit into 360 4 times, resulting in a remainder of 68.
The number 4 becomes the next digit in our result. 
Result so far: 12082.0684
Subtracting 292 from 360 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
When dividing 680 by 73, we get 9 with a remainder of 23.
The number 9 becomes the next digit in our result. 
Result so far: 12082.06849
The remainder is 23 after subtracting 657 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 12:
73 can be fit into 230 3 times, resulting in a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 12082.068493
If we take 219 away from 230, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 13:
73 can be fit into 110 1 times, resulting in a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 12082.0684931
If we subtract 73 from 110, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 14:
370 divided by 73 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 12082.06849315
Subtract 365 from 370 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 12082.06849315, with a leftover of 5e-09.