We're dividing 66193403 by 946 
Our goal is to divide 66193403 by 946.

On to step 1:
6 divided by 946 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 946

Step 2:
946 can be fit into 66 0 times, resulting in a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 946

Advancing to step 3:
If we divide 661 by 946, we get 0 and a remainder of 661.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 661, we end up with 661.
Take the next digit (9) from the dividend and append it to 661, then repeat: 6619 / 946

Step 4:
The number 946 fits into 6619 6 times, leaving a remainder of 943.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 943 after subtracting 5676 from 6619.
Include the next digit (3) from the dividend after 943, then repeat: 9433 / 946

Going ahead to step 5:
The number 946 fits into 9433 9 times, leaving a remainder of 919.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
Deduct 8514 from 9433 and we're left with 919.
Append the next digit (4) from the dividend to 919 and continue with: 9194 / 946

Step 6:
When dividing 9194 by 946, we get 9 with a remainder of 680.
Use 9 as the next digit of our solution. 
Result so far: 699.0
Deduct 8514 from 9194 and we're left with 680.
Grab the next digit (0) from the dividend, add it to 680, then carry on: 6800 / 946

Let's proceed to step 7:
When dividing 6800 by 946, we get 7 with a remainder of 178.
The next digit of our result is 7. 
Result so far: 6997.0
If we take 6622 away from 6800, we end up with 178.
Bring next digit (3) of the dividend behind the 178 and repeat the process: 1783 / 946

Advancing to step 8:
The number 946 fits into 1783 1 times, leaving a remainder of 837.
Put 1 as the next digit of the answer. 
Result so far: 69971.0
Subtracting 946 from 1783 leaves us with 837.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8370, and continue the process.

Moving on to step 9:
The number 946 fits into 8370 8 times, leaving a remainder of 802.
Record the quotient 8 as the next digit in the result. 
Result so far: 69971.8
The remainder is 802 after subtracting 7568 from 8370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8020, and continue the process.

Let's proceed to step 10:
When dividing 8020 by 946, we get 8 with a remainder of 452.
The number 8 becomes the next digit in our result. 
Result so far: 69971.88
Deduct 7568 from 8020 and we're left with 452.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

The quotient of the division is 69971.88, and the remainder is 0.452.