We look at the division of 80705938 by 873 
The aim is to understand the frequency of 873 in 80705938.

Step 1:
When dividing 8 by 873, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 873

Moving on to step 2:
873 can be fit into 80 0 times, resulting in a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 80 leaves us with 80.
Take the next digit (7) from the dividend and append it to 80, then repeat: 807 / 873

Moving on to step 3:
873 goes into 807 0 times with a remainder of 807.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 807, we get 807.
Grab the next digit (0) from the dividend, add it to 807, then carry on: 8070 / 873

On to step 4:
If we divide 8070 by 873, we get 9 and a remainder of 213.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtracting 7857 from 8070 leaves us with 213.
Include the next digit (5) from the dividend after 213, then repeat: 2135 / 873

Advancing to step 5:
When dividing 2135 by 873, we get 2 with a remainder of 389.
Use 2 as the next digit of our solution. 
Result so far: 92.0
Subtracting 1746 from 2135 leaves us with 389.
Grab the next digit (9) from the dividend, add it to 389, then carry on: 3899 / 873

Going ahead to step 6:
873 goes into 3899 4 times with a remainder of 407.
Use 4 as the next digit of our solution. 
Result so far: 924.0
Subtracting 3492 from 3899 leaves us with 407.
Bring next digit (3) of the dividend behind the 407 and repeat the process: 4073 / 873

Going ahead to step 7:
When dividing 4073 by 873, we get 4 with a remainder of 581.
Write down 4 as next digit of the result. 
Result so far: 9244.0
Subtracting 3492 from 4073 leaves us with 581.
Fetch the next digit (8) from the dividend, attach it to 581 and continue: 5818 / 873

On to step 8:
873 goes into 5818 6 times with a remainder of 580.
Use 6 as the next digit of our solution. 
Result so far: 92446.0
If we take 5238 away from 5818, we end up with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Step 9:
873 goes into 5800 6 times with a remainder of 562.
Record the quotient 6 as the next digit in the result. 
Result so far: 92446.6
Deduct 5238 from 5800 and we're left with 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Going ahead to step 10:
When dividing 5620 by 873, we get 6 with a remainder of 382.
The next digit of our result is 6. 
Result so far: 92446.66
Subtracting 5238 from 5620 leaves us with 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

The final outcome is 92446.66, with a leftover of 0.382.