63893421 ÷ 107 
We want to divide 63893421 by 107.

Moving on to step 1:
107 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 107

Let's proceed to step 2:
107 can be fit into 63 0 times, resulting in a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Bring next digit (8) of the dividend behind the 63 and repeat the process: 638 / 107

Advancing to step 3:
107 can be fit into 638 5 times, resulting in a remainder of 103.
The next digit of our result is 5. 
Result so far: 5.0
Subtracting 535 from 638 leaves us with 103.
Bring next digit (9) of the dividend behind the 103 and repeat the process: 1039 / 107

On to step 4:
The number 107 fits into 1039 9 times, leaving a remainder of 76.
Record the quotient 9 as the next digit in the result. 
Result so far: 59.0
The remainder is 76 after subtracting 963 from 1039.
Bring next digit (3) of the dividend behind the 76 and repeat the process: 763 / 107

Advancing to step 5:
When dividing 763 by 107, we get 7 with a remainder of 14.
The next digit of our result is 7. 
Result so far: 597.0
The remainder is 14 after subtracting 749 from 763.
Fetch the next digit (4) from the dividend, attach it to 14 and continue: 144 / 107

Moving on to step 6:
107 goes into 144 1 times with a remainder of 37.
The number 1 becomes the next digit in our result. 
Result so far: 5971.0
Subtracting 107 from 144 leaves us with 37.
Append the next digit (2) from the dividend to 37 and continue with: 372 / 107

Step 7:
If we divide 372 by 107, we get 3 and a remainder of 51.
The number 3 becomes the next digit in our result. 
Result so far: 59713.0
If we take 321 away from 372, we end up with 51.
Bring next digit (1) of the dividend behind the 51 and repeat the process: 511 / 107

Let's proceed to step 8:
When dividing 511 by 107, we get 4 with a remainder of 83.
The number 4 becomes the next digit in our result. 
Result so far: 597134.0
The remainder is 83 after subtracting 428 from 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 9:
When dividing 830 by 107, we get 7 with a remainder of 81.
Write down 7 as next digit of the result. 
Result so far: 597134.7
If we take 749 away from 830, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 10:
When dividing 810 by 107, we get 7 with a remainder of 61.
Put 7 as the next digit of the answer. 
Result so far: 597134.77
Deduct 749 from 810 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

After the division, we end up with 597134.77 and a remainder of 0.061.