21897355 divided by 40 
We want to figure out the number of times 21897355 can be divided by 40.

Going ahead to step 1:
The number 40 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 40

Advancing to step 2:
When dividing 21 by 40, we get 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Append the next digit (8) from the dividend to 21 and continue with: 218 / 40

Going ahead to step 3:
If we divide 218 by 40, we get 5 and a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 200 from 218 and we're left with 18.
Bring next digit (9) of the dividend behind the 18 and repeat the process: 189 / 40

Moving on to step 4:
40 can be fit into 189 4 times, resulting in a remainder of 29.
Put 4 as the next digit of the answer. 
Result so far: 54.0
If we subtract 160 from 189, we get 29.
Grab the next digit (7) from the dividend, add it to 29, then carry on: 297 / 40

Going ahead to step 5:
297 divided by 40 is 7 with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 547.0
Subtract 280 from 297 to get 17.
Include the next digit (3) from the dividend after 17, then repeat: 173 / 40

Moving on to step 6:
40 can be fit into 173 4 times, resulting in a remainder of 13.
The next digit of our result is 4. 
Result so far: 5474.0
If we subtract 160 from 173, we get 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 40

Let's proceed to step 7:
135 divided by 40 is 3 with a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 54743.0
If we subtract 120 from 135, we get 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 40

Moving on to step 8:
40 goes into 155 3 times with a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 547433.0
Deduct 120 from 155 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
When dividing 350 by 40, we get 8 with a remainder of 30.
Use 8 as the next digit of our solution. 
Result so far: 547433.8
Deduct 320 from 350 and we're left 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.

Let's proceed to step 10:
If we divide 300 by 40, we get 7 and a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 547433.87
Subtract 280 from 300 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.

Step 11:
The number 40 fits into 200 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 547433.875
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.

Step 12:
When dividing 0 by 40, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 547433.875
Subtract 0 from 0 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.

Going ahead to step 13:
If we divide 0 by 40, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 547433.875
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.

The final outcome is 547433.875, with a leftover of 0.0.