Let's divide 70708143 by 486
Our goal is to divide 70708143 by 486.

On to step 1:
486 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 486

Advancing to step 2:
486 goes into 70 0 times with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Take the next digit (7) from the dividend and append it to 70, then repeat: 707 / 486

Advancing to step 3:
The number 486 fits into 707 1 times, leaving a remainder of 221.
The next digit of our result is 1. 
Result so far: 1.0
If we take 486 away from 707, we end up with 221.
Append the next digit (0) from the dividend to 221 and continue with: 2210 / 486

Step 4:
2210 divided by 486 is 4 with a remainder of 266.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we subtract 1944 from 2210, we get 266.
Grab the next digit (8) from the dividend, add it to 266, then carry on: 2668 / 486

Going ahead to step 5:
When dividing 2668 by 486, we get 5 with a remainder of 238.
Record the quotient 5 as the next digit in the result. 
Result so far: 145.0
If we subtract 2430 from 2668, we get 238.
Grab the next digit (1) from the dividend, add it to 238, then carry on: 2381 / 486

Going ahead to step 6:
486 can be fit into 2381 4 times, resulting in a remainder of 437.
Put 4 as the next digit of the answer. 
Result so far: 1454.0
The remainder is 437 after subtracting 1944 from 2381.
Take the next digit (4) from the dividend and append it to 437, then repeat: 4374 / 486

Advancing to step 7:
When dividing 4374 by 486, we get 9 with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 14549.0
Subtracting 4374 from 4374 leaves us with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 486

Step 8:
486 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 145490.0
Subtracting 0 from 3 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
If we divide 30 by 486, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 145490.0
If we take 0 away from 30, 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:
If we divide 300 by 486, we get 0 and a remainder of 300.
Use 0 as the next digit of our solution. 
Result so far: 145490.0
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.

The final result is 145490.0 with a remainder of 0.3.