16066687 ÷ 40 
We want to divide 16066687 by 40.

Step 1:
40 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 40

On to step 2:
16 divided by 40 is 0 with a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 40

Going ahead to step 3:
If we divide 160 by 40, we get 4 and a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 160 from 160, we get 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 40

Step 4:
6 divided by 40 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 40

Advancing to step 5:
When dividing 66 by 40, we get 1 with a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 401.0
The remainder is 26 after subtracting 40 from 66.
Include the next digit (6) from the dividend after 26, then repeat: 266 / 40

Moving on to step 6:
When dividing 266 by 40, we get 6 with a remainder of 26.
The next digit of our result is 6. 
Result so far: 4016.0
Subtract 240 from 266 to get 26.
Fetch the next digit (8) from the dividend, attach it to 26 and continue: 268 / 40

Advancing to step 7:
268 divided by 40 is 6 with a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 40166.0
Deduct 240 from 268 and we're left with 28.
Take the next digit (7) from the dividend and append it to 28, then repeat: 287 / 40

Moving on to step 8:
40 goes into 287 7 times with a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 401667.0
If we take 280 away from 287, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 9:
If we divide 70 by 40, we get 1 and a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 401667.1
Subtracting 40 from 70 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 10:
The number 40 fits into 300 7 times, leaving a remainder of 20.
Record the quotient 7 as the next digit in the result. 
Result so far: 401667.17
If we subtract 280 from 300, we 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.

On to step 11:
200 divided by 40 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 401667.175
Subtract 200 from 200 to get 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:
0 divided by 40 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 401667.175
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.

On to step 13:
0 divided by 40 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 401667.175
Subtracting 0 from 0 leaves us 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.

In conclusion, the division gives 401667.175 with a balance of 0.0.