877021 divided by 19 
The aim is to understand the frequency of 19 in 877021.

Moving on to step 1:
If we divide 8 by 19, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 19

Moving on to step 2:
The number 19 fits into 87 4 times, leaving a remainder of 11.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 76 from 87, we get 11.
Append the next digit (7) from the dividend to 11 and continue with: 117 / 19

Step 3:
When dividing 117 by 19, we get 6 with a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 46.0
If we subtract 114 from 117, we get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 19

On to step 4:
19 goes into 30 1 times with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 461.0
Deduct 19 from 30 and we're left with 11.
Fetch the next digit (2) from the dividend, attach it to 11 and continue: 112 / 19

On to step 5:
19 goes into 112 5 times with a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 4615.0
Deduct 95 from 112 and we're left with 17.
Include the next digit (1) from the dividend after 17, then repeat: 171 / 19

On to step 6:
When dividing 171 by 19, we get 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 46159.0
Subtracting 171 from 171 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
19 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 46159.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
0 divided by 19 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 46159.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 46159.0, with a leftover of 0.0.