638942 ÷ 45 
Our goal is to divide 638942 by 45.

Moving on to step 1:
The number 45 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 45

On to step 2:
45 can be fit into 63 1 times, resulting in a remainder of 18.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 45 from 63 and we're left with 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 45

Advancing to step 3:
When dividing 188 by 45, we get 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 180 from 188 to get 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 45

Moving on to step 4:
If we divide 89 by 45, we get 1 and a remainder of 44.
The number 1 becomes the next digit in our result. 
Result so far: 141.0
If we take 45 away from 89, we end up with 44.
Append the next digit (4) from the dividend to 44 and continue with: 444 / 45

On to step 5:
45 goes into 444 9 times with a remainder of 39.
The next digit of our result is 9. 
Result so far: 1419.0
If we take 405 away from 444, we end up with 39.
Include the next digit (2) from the dividend after 39, then repeat: 392 / 45

Let's proceed to step 6:
45 goes into 392 8 times with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 14198.0
Deduct 360 from 392 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 7:
The number 45 fits into 320 7 times, leaving a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 14198.7
The remainder is 5 after subtracting 315 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
When dividing 50 by 45, we get 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 14198.71
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
When dividing 50 by 45, we get 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 14198.711
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 14198.711 with a remainder of 0.0005.