863400 ÷ 70 
Let's see how many times 70 fits into 863400.

Advancing to step 1:
When dividing 8 by 70, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 70

Advancing to step 2:
If we divide 86 by 70, we get 1 and a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 70 from 86 to get 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 70

On to step 3:
When dividing 163 by 70, we get 2 with a remainder of 23.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtract 140 from 163 to get 23.
Take the next digit (4) from the dividend and append it to 23, then repeat: 234 / 70

On to step 4:
234 divided by 70 is 3 with a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
Subtract 210 from 234 to get 24.
Include the next digit (0) from the dividend after 24, then repeat: 240 / 70

On to step 5:
The number 70 fits into 240 3 times, leaving a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 1233.0
If we take 210 away from 240, we end up with 30.
Grab the next digit (0) from the dividend, add it to 30, then carry on: 300 / 70

Going ahead to step 6:
The number 70 fits into 300 4 times, leaving a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 12334.0
Subtract 280 from 300 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
70 goes into 200 2 times with a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 12334.2
Subtracting 140 from 200 leaves us 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.

Let's proceed to step 8:
If we divide 600 by 70, we get 8 and a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 12334.28
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.

Advancing to step 9:
400 divided by 70 is 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 12334.285
Deduct 350 from 400 and we're left 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.

Step 10:
The number 70 fits into 500 7 times, leaving a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 12334.2857
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.

On to step 11:
When dividing 100 by 70, we get 1 with a remainder of 30.
The next digit of our result is 1. 
Result so far: 12334.28571
The remainder is 30 after subtracting 70 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 12:
When dividing 300 by 70, we get 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 12334.285714
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.

Moving on to step 13:
70 goes into 200 2 times with a remainder of 60.
The next digit of our result is 2. 
Result so far: 12334.2857142
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.

On to step 14:
The number 70 fits into 600 8 times, leaving a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 12334.28571428
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.

The quotient of the division is 12334.28571428, and the remainder is 4e-08.