We're dividing 63904303 by 906 
We want to divide 63904303 by 906.

Going ahead to step 1:
When dividing 6 by 906, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 906

Let's proceed to step 2:
The number 906 fits into 63 0 times, leaving a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Bring next digit (9) of the dividend behind the 63 and repeat the process: 639 / 906

Moving on to step 3:
When dividing 639 by 906, we get 0 with a remainder of 639.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 639 to get 639.
Bring next digit (0) of the dividend behind the 639 and repeat the process: 6390 / 906

Moving on to step 4:
The number 906 fits into 6390 7 times, leaving a remainder of 48.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 6342 from 6390 to get 48.
Include the next digit (4) from the dividend after 48, then repeat: 484 / 906

Going ahead to step 5:
When dividing 484 by 906, we get 0 with a remainder of 484.
The next digit of our result is 0. 
Result so far: 70.0
Deduct 0 from 484 and we're left with 484.
Append the next digit (3) from the dividend to 484 and continue with: 4843 / 906

Moving on to step 6:
4843 divided by 906 is 5 with a remainder of 313.
The number 5 becomes the next digit in our result. 
Result so far: 705.0
Subtract 4530 from 4843 to get 313.
Take the next digit (0) from the dividend and append it to 313, then repeat: 3130 / 906

Going ahead to step 7:
When dividing 3130 by 906, we get 3 with a remainder of 412.
Use 3 as the next digit of our solution. 
Result so far: 7053.0
If we take 2718 away from 3130, we end up with 412.
Bring next digit (3) of the dividend behind the 412 and repeat the process: 4123 / 906

Advancing to step 8:
906 can be fit into 4123 4 times, resulting in a remainder of 499.
Write down 4 as next digit of the result. 
Result so far: 70534.0
If we take 3624 away from 4123, we end up with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Let's proceed to step 9:
When dividing 4990 by 906, we get 5 with a remainder of 460.
Record the quotient 5 as the next digit in the result. 
Result so far: 70534.5
Deduct 4530 from 4990 and we're left with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 10:
906 goes into 4600 5 times with a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 70534.55
If we take 4530 away from 4600, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final outcome is 70534.55, with a leftover of 0.07.