We look at the division of 27770838 by 870 
The aim is to understand the frequency of 870 in 27770838.

Let's proceed to step 1:
2 divided by 870 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 870

Let's proceed to step 2:
27 divided by 870 is 0 with a remainder of 27.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 27, we get 27.
Fetch the next digit (7) from the dividend, attach it to 27 and continue: 277 / 870

Moving on to step 3:
If we divide 277 by 870, we get 0 and a remainder of 277.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 277, we end up with 277.
Grab the next digit (7) from the dividend, add it to 277, then carry on: 2777 / 870

Advancing to step 4:
If we divide 2777 by 870, we get 3 and a remainder of 167.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 2610 from 2777 to get 167.
Bring next digit (0) of the dividend behind the 167 and repeat the process: 1670 / 870

Let's proceed to step 5:
1670 divided by 870 is 1 with a remainder of 800.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
The remainder is 800 after subtracting 870 from 1670.
Bring next digit (8) of the dividend behind the 800 and repeat the process: 8008 / 870

On to step 6:
When dividing 8008 by 870, we get 9 with a remainder of 178.
Write down 9 as next digit of the result. 
Result so far: 319.0
If we subtract 7830 from 8008, we get 178.
Bring next digit (3) of the dividend behind the 178 and repeat the process: 1783 / 870

Advancing to step 7:
1783 divided by 870 is 2 with a remainder of 43.
The number 2 becomes the next digit in our result. 
Result so far: 3192.0
Subtracting 1740 from 1783 leaves us with 43.
Include the next digit (8) from the dividend after 43, then repeat: 438 / 870

On to step 8:
870 can be fit into 438 0 times, resulting in a remainder of 438.
Put 0 as the next digit of the answer. 
Result so far: 31920.0
If we take 0 away from 438, we end up with 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

On to step 9:
870 can be fit into 4380 5 times, resulting in a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 31920.5
If we take 4350 away from 4380, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
300 divided by 870 is 0 with a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 31920.5
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 11:
870 goes into 3000 3 times with a remainder of 390.
Use 3 as the next digit of our solution. 
Result so far: 31920.503
Subtracting 2610 from 3000 leaves us with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Going ahead to step 12:
870 can be fit into 3900 4 times, resulting in a remainder of 420.
The number 4 becomes the next digit in our result. 
Result so far: 31920.5034
Deduct 3480 from 3900 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Moving on to step 13:
870 can be fit into 4200 4 times, resulting in a remainder of 720.
Record the quotient 4 as the next digit in the result. 
Result so far: 31920.50344
Deduct 3480 from 4200 and we're left with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

The final result is 31920.50344 with a remainder of 0.00072.