We're dividing 66009145 by 40 
We want to figure out the number of times 66009145 can be divided by 40.

Step 1:
If we divide 6 by 40, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 40

On to step 2:
When dividing 66 by 40, we get 1 with a remainder of 26.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 40 from 66 to get 26.
Include the next digit (0) from the dividend after 26, then repeat: 260 / 40

Step 3:
If we divide 260 by 40, we get 6 and a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Subtract 240 from 260 to get 20.
Append the next digit (0) from the dividend to 20 and continue with: 200 / 40

Step 4:
40 goes into 200 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 165.0
Deduct 200 from 200 and we're left with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 40

Going ahead to step 5:
If we divide 9 by 40, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 1650.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 40

Going ahead to step 6:
If we divide 91 by 40, we get 2 and a remainder of 11.
Record the quotient 2 as the next digit in the result. 
Result so far: 16502.0
Deduct 80 from 91 and we're left with 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 40

Let's proceed to step 7:
40 goes into 114 2 times with a remainder of 34.
The number 2 becomes the next digit in our result. 
Result so far: 165022.0
Subtract 80 from 114 to get 34.
Bring next digit (5) of the dividend behind the 34 and repeat the process: 345 / 40

Going ahead to step 8:
The number 40 fits into 345 8 times, leaving a remainder of 25.
Record the quotient 8 as the next digit in the result. 
Result so far: 1650228.0
Deduct 320 from 345 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
40 can be fit into 250 6 times, resulting in a remainder of 10.
The next digit of our result is 6. 
Result so far: 1650228.6
If we subtract 240 from 250, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
40 can be fit into 100 2 times, resulting in a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 1650228.62
Subtract 80 from 100 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
When dividing 200 by 40, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 1650228.625
If we take 200 away from 200, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 12:
The number 40 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1650228.625
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 13:
The number 40 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1650228.625
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 1650228.625, and the remainder is 0.0.