125866 divided by 70 
We want to figure out the number of times 125866 can be divided by 70.

On to step 1:
The number 70 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 70

Going ahead to step 2:
70 can be fit into 12 0 times, resulting in a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 70

Moving on to step 3:
If we divide 125 by 70, we get 1 and a remainder of 55.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 70 from 125 and we're left with 55.
Take the next digit (8) from the dividend and append it to 55, then repeat: 558 / 70

Let's proceed to step 4:
The number 70 fits into 558 7 times, leaving a remainder of 68.
The next digit of our result is 7. 
Result so far: 17.0
The remainder is 68 after subtracting 490 from 558.
Grab the next digit (6) from the dividend, add it to 68, then carry on: 686 / 70

Step 5:
686 divided by 70 is 9 with a remainder of 56.
Record the quotient 9 as the next digit in the result. 
Result so far: 179.0
Deduct 630 from 686 and we're left with 56.
Include the next digit (6) from the dividend after 56, then repeat: 566 / 70

On to step 6:
If we divide 566 by 70, we get 8 and a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 1798.0
If we subtract 560 from 566, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
The number 70 fits into 60 0 times, leaving a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 1798.0
Subtract 0 from 60 to 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.

Step 8:
When dividing 600 by 70, we get 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 1798.08
If we take 560 away from 600, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
70 goes into 400 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 1798.085
Subtracting 350 from 400 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 10:
When dividing 500 by 70, we get 7 with a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 1798.0857
If we subtract 490 from 500, 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 11:
If we divide 100 by 70, we get 1 and a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 1798.08571
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.

Going ahead to step 12:
The number 70 fits into 300 4 times, leaving a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 1798.085714
Deduct 280 from 300 and we're left 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.

Step 13:
If we divide 200 by 70, we get 2 and a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 1798.0857142
If we take 140 away from 200, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 14:
If we divide 600 by 70, we get 8 and a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 1798.08571428
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 1798.08571428, and the remainder is 4e-08.