We divide 142397 by 45
We want to figure out the number of times 142397 can be divided by 45.

Moving on to step 1:
When dividing 1 by 45, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 45

Let's proceed to step 2:
45 goes into 14 0 times with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 14 after subtracting 0 from 14.
Fetch the next digit (2) from the dividend, attach it to 14 and continue: 142 / 45

Step 3:
When dividing 142 by 45, we get 3 with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 135 from 142, we get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 45

Moving on to step 4:
The number 45 fits into 73 1 times, leaving a remainder of 28.
Use 1 as the next digit of our solution. 
Result so far: 31.0
If we take 45 away from 73, we end up with 28.
Include the next digit (9) from the dividend after 28, then repeat: 289 / 45

Step 5:
45 can be fit into 289 6 times, resulting in a remainder of 19.
Write down 6 as next digit of the result. 
Result so far: 316.0
If we take 270 away from 289, we end up with 19.
Fetch the next digit (7) from the dividend, attach it to 19 and continue: 197 / 45

Going ahead to step 6:
45 goes into 197 4 times with a remainder of 17.
The next digit of our result is 4. 
Result so far: 3164.0
If we subtract 180 from 197, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 7:
170 divided by 45 is 3 with a remainder of 35.
The next digit of our result is 3. 
Result so far: 3164.3
Subtract 135 from 170 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 8:
If we divide 350 by 45, we get 7 and a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 3164.37
Subtract 315 from 350 to get 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 45, we get 7 with a remainder of 35.
Use 7 as the next digit of our solution. 
Result so far: 3164.377
Subtracting 315 from 350 leaves us 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.

The quotient of the division is 3164.377, and the remainder is 0.0035.