16400596 ÷ 66 
We're looking to find how many times 66 goes into 16400596.

Step 1:
When dividing 1 by 66, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 66

Step 2:
The number 66 fits into 16 0 times, leaving a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 66

Moving on to step 3:
The number 66 fits into 164 2 times, leaving a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 132 from 164, we get 32.
Grab the next digit (0) from the dividend, add it to 32, then carry on: 320 / 66

Let's proceed to step 4:
The number 66 fits into 320 4 times, leaving a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 24.0
If we take 264 away from 320, we end up with 56.
Fetch the next digit (0) from the dividend, attach it to 56 and continue: 560 / 66

On to step 5:
66 can be fit into 560 8 times, resulting in a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 248.0
If we take 528 away from 560, we end up with 32.
Append the next digit (5) from the dividend to 32 and continue with: 325 / 66

Let's proceed to step 6:
325 divided by 66 is 4 with a remainder of 61.
Record the quotient 4 as the next digit in the result. 
Result so far: 2484.0
The remainder is 61 after subtracting 264 from 325.
Fetch the next digit (9) from the dividend, attach it to 61 and continue: 619 / 66

Moving on to step 7:
619 divided by 66 is 9 with a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 24849.0
If we take 594 away from 619, we end up with 25.
Append the next digit (6) from the dividend to 25 and continue with: 256 / 66

Let's proceed to step 8:
66 goes into 256 3 times with a remainder of 58.
Put 3 as the next digit of the answer. 
Result so far: 248493.0
The remainder is 58 after subtracting 198 from 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 9:
If we divide 580 by 66, we get 8 and a remainder of 52.
The next digit of our result is 8. 
Result so far: 248493.8
Subtract 528 from 580 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 10:
66 can be fit into 520 7 times, resulting in a remainder of 58.
Use 7 as the next digit of our solution. 
Result so far: 248493.87
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 11:
If we divide 580 by 66, we get 8 and a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 248493.878
If we take 528 away from 580, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 12:
When dividing 520 by 66, we get 7 with a remainder of 58.
Use 7 as the next digit of our solution. 
Result so far: 248493.8787
The remainder is 58 after subtracting 462 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 13:
The number 66 fits into 580 8 times, leaving a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 248493.87878
The remainder is 52 after subtracting 528 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 14:
520 divided by 66 is 7 with a remainder of 58.
The next digit of our result is 7. 
Result so far: 248493.878787
Deduct 462 from 520 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 15:
If we divide 580 by 66, we get 8 and a remainder of 52.
The next digit of our result is 8. 
Result so far: 248493.8787878
If we take 528 away from 580, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 16:
66 goes into 520 7 times with a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 248493.87878787
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The quotient of the division is 248493.87878787, and the remainder is 5.8e-08.