63965966 ÷ 946 
Let's see how many times 946 fits into 63965966.

On to step 1:
946 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 946

Step 2:
946 goes into 63 0 times with a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 946

Let's proceed to step 3:
639 divided by 946 is 0 with a remainder of 639.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 639, we end up with 639.
Include the next digit (6) from the dividend after 639, then repeat: 6396 / 946

Step 4:
When dividing 6396 by 946, we get 6 with a remainder of 720.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 720 after subtracting 5676 from 6396.
Include the next digit (5) from the dividend after 720, then repeat: 7205 / 946

Advancing to step 5:
The number 946 fits into 7205 7 times, leaving a remainder of 583.
Record the quotient 7 as the next digit in the result. 
Result so far: 67.0
If we take 6622 away from 7205, we end up with 583.
Take the next digit (9) from the dividend and append it to 583, then repeat: 5839 / 946

On to step 6:
946 can be fit into 5839 6 times, resulting in a remainder of 163.
Write down 6 as next digit of the result. 
Result so far: 676.0
The remainder is 163 after subtracting 5676 from 5839.
Append the next digit (6) from the dividend to 163 and continue with: 1636 / 946

Advancing to step 7:
946 goes into 1636 1 times with a remainder of 690.
Use 1 as the next digit of our solution. 
Result so far: 6761.0
The remainder is 690 after subtracting 946 from 1636.
Take the next digit (6) from the dividend and append it to 690, then repeat: 6906 / 946

Moving on to step 8:
The number 946 fits into 6906 7 times, leaving a remainder of 284.
The next digit of our result is 7. 
Result so far: 67617.0
Deduct 6622 from 6906 and we're left with 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

On to step 9:
2840 divided by 946 is 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 67617.3
If we subtract 2838 from 2840, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
The number 946 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 67617.3
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
When dividing 200 by 946, we get 0 with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 67617.3
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final outcome is 67617.3, with a leftover of 0.02.