66945857 divided by 300 
Let's see how many times 300 fits into 66945857.

On to step 1:
When dividing 6 by 300, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
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 / 300

Let's proceed to step 2:
If we divide 66 by 300, we get 0 and a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 300

Going ahead to step 3:
669 divided by 300 is 2 with a remainder of 69.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 600 from 669, we get 69.
Take the next digit (4) from the dividend and append it to 69, then repeat: 694 / 300

Moving on to step 4:
694 divided by 300 is 2 with a remainder of 94.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Deduct 600 from 694 and we're left with 94.
Grab the next digit (5) from the dividend, add it to 94, then carry on: 945 / 300

On to step 5:
300 goes into 945 3 times with a remainder of 45.
The number 3 becomes the next digit in our result. 
Result so far: 223.0
If we take 900 away from 945, we end up with 45.
Fetch the next digit (8) from the dividend, attach it to 45 and continue: 458 / 300

Moving on to step 6:
The number 300 fits into 458 1 times, leaving a remainder of 158.
The next digit of our result is 1. 
Result so far: 2231.0
Subtract 300 from 458 to get 158.
Include the next digit (5) from the dividend after 158, then repeat: 1585 / 300

Advancing to step 7:
1585 divided by 300 is 5 with a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 22315.0
Deduct 1500 from 1585 and we're left with 85.
Grab the next digit (7) from the dividend, add it to 85, then carry on: 857 / 300

Going ahead to step 8:
If we divide 857 by 300, we get 2 and a remainder of 257.
Use 2 as the next digit of our solution. 
Result so far: 223152.0
The remainder is 257 after subtracting 600 from 857.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Advancing to step 9:
300 goes into 2570 8 times with a remainder of 170.
Put 8 as the next digit of the answer. 
Result so far: 223152.8
Subtracting 2400 from 2570 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 10:
300 can be fit into 1700 5 times, resulting in a remainder of 200.
Write down 5 as next digit of the result. 
Result so far: 223152.85
If we subtract 1500 from 1700, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 11:
300 goes into 2000 6 times with a remainder of 200.
Put 6 as the next digit of the answer. 
Result so far: 223152.856
Subtract 1800 from 2000 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 12:
When dividing 2000 by 300, we get 6 with a remainder of 200.
The number 6 becomes the next digit in our result. 
Result so far: 223152.8566
If we subtract 1800 from 2000, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 223152.8566 and a remainder of 0.002.