We look at the division of 1857321 by 887 
The aim is to understand the frequency of 887 in 1857321.

On to step 1:
887 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 887

Advancing to step 2:
If we divide 18 by 887, we get 0 and a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Take the next digit (5) from the dividend and append it to 18, then repeat: 185 / 887

Let's proceed to step 3:
887 can be fit into 185 0 times, resulting in a remainder of 185.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 185, we get 185.
Take the next digit (7) from the dividend and append it to 185, then repeat: 1857 / 887

Moving on to step 4:
If we divide 1857 by 887, we get 2 and a remainder of 83.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 83 after subtracting 1774 from 1857.
Append the next digit (3) from the dividend to 83 and continue with: 833 / 887

On to step 5:
If we divide 833 by 887, we get 0 and a remainder of 833.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtract 0 from 833 to get 833.
Grab the next digit (2) from the dividend, add it to 833, then carry on: 8332 / 887

Going ahead to step 6:
8332 divided by 887 is 9 with a remainder of 349.
Record the quotient 9 as the next digit in the result. 
Result so far: 209.0
Subtract 7983 from 8332 to get 349.
Grab the next digit (1) from the dividend, add it to 349, then carry on: 3491 / 887

Advancing to step 7:
If we divide 3491 by 887, we get 3 and a remainder of 830.
Use 3 as the next digit of our solution. 
Result so far: 2093.0
The remainder is 830 after subtracting 2661 from 3491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8300, and continue the process.

Step 8:
8300 divided by 887 is 9 with a remainder of 317.
Put 9 as the next digit of the answer. 
Result so far: 2093.9
Subtract 7983 from 8300 to get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

On to step 9:
The number 887 fits into 3170 3 times, leaving a remainder of 509.
Record the quotient 3 as the next digit in the result. 
Result so far: 2093.93
If we take 2661 away from 3170, we end up with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Moving on to step 10:
887 can be fit into 5090 5 times, resulting in a remainder of 655.
Put 5 as the next digit of the answer. 
Result so far: 2093.935
Subtract 4435 from 5090 to get 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Step 11:
If we divide 6550 by 887, we get 7 and a remainder of 341.
Write down 7 as next digit of the result. 
Result so far: 2093.9357
If we subtract 6209 from 6550, we get 341.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Advancing to step 12:
If we divide 3410 by 887, we get 3 and a remainder of 749.
The next digit of our result is 3. 
Result so far: 2093.93573
If we take 2661 away from 3410, we end up with 749.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7490, and continue the process.

Step 13:
When dividing 7490 by 887, we get 8 with a remainder of 394.
Use 8 as the next digit of our solution. 
Result so far: 2093.935738
Subtracting 7096 from 7490 leaves us with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Advancing to step 14:
When dividing 3940 by 887, we get 4 with a remainder of 392.
Write down 4 as next digit of the result. 
Result so far: 2093.9357384
Subtract 3548 from 3940 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 15:
887 goes into 3920 4 times with a remainder of 372.
Use 4 as the next digit of our solution. 
Result so far: 2093.93573844
If we subtract 3548 from 3920, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

The final outcome is 2093.93573844, with a leftover of 3.72e-07.