Let's divide 87789643 by 870
The aim is to understand the frequency of 870 in 87789643.

Advancing to step 1:
When dividing 8 by 870, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 870

On to step 2:
87 divided by 870 is 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Bring next digit (7) of the dividend behind the 87 and repeat the process: 877 / 870

Let's proceed to step 3:
877 divided by 870 is 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 870 from 877, we get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 870

Moving on to step 4:
78 divided by 870 is 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 78, we get 78.
Take the next digit (9) from the dividend and append it to 78, then repeat: 789 / 870

Advancing to step 5:
870 can be fit into 789 0 times, resulting in a remainder of 789.
Use 0 as the next digit of our solution. 
Result so far: 100.0
If we take 0 away from 789, we end up with 789.
Bring next digit (6) of the dividend behind the 789 and repeat the process: 7896 / 870

Going ahead to step 6:
7896 divided by 870 is 9 with a remainder of 66.
Use 9 as the next digit of our solution. 
Result so far: 1009.0
If we subtract 7830 from 7896, we get 66.
Append the next digit (4) from the dividend to 66 and continue with: 664 / 870

Let's proceed to step 7:
The number 870 fits into 664 0 times, leaving a remainder of 664.
Write down 0 as next digit of the result. 
Result so far: 10090.0
Deduct 0 from 664 and we're left with 664.
Take the next digit (3) from the dividend and append it to 664, then repeat: 6643 / 870

Step 8:
If we divide 6643 by 870, we get 7 and a remainder of 553.
Put 7 as the next digit of the answer. 
Result so far: 100907.0
Deduct 6090 from 6643 and we're left with 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

Let's proceed to step 9:
870 can be fit into 5530 6 times, resulting in a remainder of 310.
The number 6 becomes the next digit in our result. 
Result so far: 100907.6
The remainder is 310 after subtracting 5220 from 5530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Moving on to step 10:
870 goes into 3100 3 times with a remainder of 490.
The next digit of our result is 3. 
Result so far: 100907.63
Subtract 2610 from 3100 to get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Advancing to step 11:
4900 divided by 870 is 5 with a remainder of 550.
Use 5 as the next digit of our solution. 
Result so far: 100907.635
Subtracting 4350 from 4900 leaves us with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Going ahead to step 12:
The number 870 fits into 5500 6 times, leaving a remainder of 280.
Record the quotient 6 as the next digit in the result. 
Result so far: 100907.6356
Deduct 5220 from 5500 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 13:
The number 870 fits into 2800 3 times, leaving a remainder of 190.
The number 3 becomes the next digit in our result. 
Result so far: 100907.63563
Subtract 2610 from 2800 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Going ahead to step 14:
The number 870 fits into 1900 2 times, leaving a remainder of 160.
Write down 2 as next digit of the result. 
Result so far: 100907.635632
Subtract 1740 from 1900 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 15:
1600 divided by 870 is 1 with a remainder of 730.
The number 1 becomes the next digit in our result. 
Result so far: 100907.6356321
Deduct 870 from 1600 and we're left with 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7300, and continue the process.

Let's proceed to step 16:
7300 divided by 870 is 8 with a remainder of 340.
Put 8 as the next digit of the answer. 
Result so far: 100907.63563218
Subtract 6960 from 7300 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Our division results in 100907.63563218 with a remaining 3.4e-07.