We're dividing 557866 by 70 
The aim is to understand the frequency of 70 in 557866.

On to step 1:
The number 70 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 70

Step 2:
70 can be fit into 55 0 times, resulting in a remainder of 55.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Include the next digit (7) from the dividend after 55, then repeat: 557 / 70

On to step 3:
When dividing 557 by 70, we get 7 with a remainder of 67.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 490 from 557 to get 67.
Append the next digit (8) from the dividend to 67 and continue with: 678 / 70

Moving on to step 4:
The number 70 fits into 678 9 times, leaving a remainder of 48.
Put 9 as the next digit of the answer. 
Result so far: 79.0
The remainder is 48 after subtracting 630 from 678.
Include the next digit (6) from the dividend after 48, then repeat: 486 / 70

Going ahead to step 5:
486 divided by 70 is 6 with a remainder of 66.
Put 6 as the next digit of the answer. 
Result so far: 796.0
Subtract 420 from 486 to get 66.
Bring next digit (6) of the dividend behind the 66 and repeat the process: 666 / 70

Step 6:
666 divided by 70 is 9 with a remainder of 36.
Use 9 as the next digit of our solution. 
Result so far: 7969.0
Subtract 630 from 666 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 7:
If we divide 360 by 70, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 7969.5
If we subtract 350 from 360, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
100 divided by 70 is 1 with a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 7969.51
If we subtract 70 from 100, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
The number 70 fits into 300 4 times, leaving a remainder of 20.
The next digit of our result is 4. 
Result so far: 7969.514
If we take 280 away from 300, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
The number 70 fits into 200 2 times, leaving a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 7969.5142
If we subtract 140 from 200, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
70 can be fit into 600 8 times, resulting in a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 7969.51428
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 12:
70 goes into 400 5 times with a remainder of 50.
The next digit of our result is 5. 
Result so far: 7969.514285
Subtract 350 from 400 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 13:
70 can be fit into 500 7 times, resulting in a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 7969.5142857
Subtracting 490 from 500 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 14:
100 divided by 70 is 1 with a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 7969.51428571
Deduct 70 from 100 and we're left 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.

The final result is 7969.51428571 with a remainder of 3e-08.