We divide 80415686 by 40
Our goal is to divide 80415686 by 40.

Step 1:
When dividing 8 by 40, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 40

Going ahead to step 2:
40 goes into 80 2 times with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 0 after subtracting 80 from 80.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 40

Going ahead to step 3:
When dividing 4 by 40, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 40

Let's proceed to step 4:
41 divided by 40 is 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 201.0
Subtracting 40 from 41 leaves us with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 40

Moving on to step 5:
The number 40 fits into 15 0 times, leaving a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 2010.0
Subtracting 0 from 15 leaves us with 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 40

Going ahead to step 6:
40 goes into 156 3 times with a remainder of 36.
Record the quotient 3 as the next digit in the result. 
Result so far: 20103.0
If we subtract 120 from 156, we get 36.
Take the next digit (8) from the dividend and append it to 36, then repeat: 368 / 40

On to step 7:
If we divide 368 by 40, we get 9 and a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 201039.0
Subtract 360 from 368 to get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 40

Moving on to step 8:
When dividing 86 by 40, we get 2 with a remainder of 6.
The next digit of our result is 2. 
Result so far: 2010392.0
The remainder is 6 after subtracting 80 from 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
The number 40 fits into 60 1 times, leaving a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 2010392.1
If we subtract 40 from 60, 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 10:
If we divide 200 by 40, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 2010392.15
Deduct 200 from 200 and we're left 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.

Moving on to step 11:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2010392.15
Deduct 0 from 0 and we're left 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.

Moving on to step 12:
40 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 2010392.15
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.

The quotient of the division is 2010392.15, and the remainder is 0.0.