66588063 divided by 638 
Let's see how many times 638 fits into 66588063.

Going ahead to step 1:
The number 638 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 638

Let's proceed to step 2:
If we divide 66 by 638, we get 0 and a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Append the next digit (5) from the dividend to 66 and continue with: 665 / 638

Step 3:
665 divided by 638 is 1 with a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 638 from 665 leaves us with 27.
Bring next digit (8) of the dividend behind the 27 and repeat the process: 278 / 638

Moving on to step 4:
638 goes into 278 0 times with a remainder of 278.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 278 and we're left with 278.
Append the next digit (8) from the dividend to 278 and continue with: 2788 / 638

Advancing to step 5:
638 can be fit into 2788 4 times, resulting in a remainder of 236.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
Deduct 2552 from 2788 and we're left with 236.
Take the next digit (0) from the dividend and append it to 236, then repeat: 2360 / 638

On to step 6:
The number 638 fits into 2360 3 times, leaving a remainder of 446.
Write down 3 as next digit of the result. 
Result so far: 1043.0
Deduct 1914 from 2360 and we're left with 446.
Grab the next digit (6) from the dividend, add it to 446, then carry on: 4466 / 638

Step 7:
638 goes into 4466 7 times with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 10437.0
If we take 4466 away from 4466, we end up with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 638

On to step 8:
The number 638 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 104370.0
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.

Moving on to step 9:
When dividing 30 by 638, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 104370.0
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.

Going ahead to step 10:
638 goes into 300 0 times with a remainder of 300.
The number 0 becomes the next digit in our result. 
Result so far: 104370.0
Subtract 0 from 300 to get 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 quotient of the division is 104370.0, and the remainder is 0.3.