Let's divide 15877623 by 40
We want to figure out the number of times 15877623 can be divided by 40.

Step 1:
If we divide 1 by 40, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 40

Advancing to step 2:
15 divided by 40 is 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Append the next digit (8) from the dividend to 15 and continue with: 158 / 40

Going ahead to step 3:
40 goes into 158 3 times with a remainder of 38.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 120 from 158 to get 38.
Bring next digit (7) of the dividend behind the 38 and repeat the process: 387 / 40

Moving on to step 4:
387 divided by 40 is 9 with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 39.0
Subtract 360 from 387 to get 27.
Fetch the next digit (7) from the dividend, attach it to 27 and continue: 277 / 40

Advancing to step 5:
The number 40 fits into 277 6 times, leaving a remainder of 37.
The number 6 becomes the next digit in our result. 
Result so far: 396.0
The remainder is 37 after subtracting 240 from 277.
Fetch the next digit (6) from the dividend, attach it to 37 and continue: 376 / 40

Moving on to step 6:
When dividing 376 by 40, we get 9 with a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 3969.0
Subtract 360 from 376 to get 16.
Include the next digit (2) from the dividend after 16, then repeat: 162 / 40

Let's proceed to step 7:
If we divide 162 by 40, we get 4 and a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 39694.0
The remainder is 2 after subtracting 160 from 162.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 40

On to step 8:
When dividing 23 by 40, we get 0 with a remainder of 23.
Record the quotient 0 as the next digit in the result. 
Result so far: 396940.0
Subtract 0 from 23 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 9:
40 goes into 230 5 times with a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 396940.5
The remainder is 30 after subtracting 200 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
If we divide 300 by 40, we get 7 and a remainder of 20.
Record the quotient 7 as the next digit in the result. 
Result so far: 396940.57
If we take 280 away from 300, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
40 can be fit into 200 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 396940.575
Subtracting 200 from 200 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.

On to step 12:
When dividing 0 by 40, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 396940.575
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.

Moving on to step 13:
If we divide 0 by 40, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 396940.575
If we subtract 0 from 0, we 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.

The final outcome is 396940.575, with a leftover of 0.0.