We divide 602143 by 40
We want to figure out the number of times 602143 can be divided by 40.

Step 1:
If we divide 6 by 40, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 40

Advancing to step 2:
If we divide 60 by 40, we get 1 and a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 40 from 60, we get 20.
Include the next digit (2) from the dividend after 20, then repeat: 202 / 40

Going ahead to step 3:
The number 40 fits into 202 5 times, leaving a remainder of 2.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
If we take 200 away from 202, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 40

Step 4:
40 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 150.0
If we subtract 0 from 21, we get 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 40

Advancing to step 5:
40 goes into 214 5 times with a remainder of 14.
The next digit of our result is 5. 
Result so far: 1505.0
Deduct 200 from 214 and we're left with 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 40

On to step 6:
The number 40 fits into 143 3 times, leaving a remainder of 23.
The next digit of our result is 3. 
Result so far: 15053.0
If we take 120 away from 143, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 7:
When dividing 230 by 40, we get 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 15053.5
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.

Moving on to step 8:
When dividing 300 by 40, we get 7 with a remainder of 20.
The next digit of our result is 7. 
Result so far: 15053.57
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.

Advancing to step 9:
If we divide 200 by 40, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 15053.575
The remainder is 0 after subtracting 200 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
When dividing 0 by 40, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 15053.575
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.

On to step 11:
0 divided by 40 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15053.575
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.

Our division results in 15053.575 with a remaining 0.0.