We divide 637889 by 42
We want to figure out the number of times 637889 can be divided by 42.

Moving on to step 1:
When dividing 6 by 42, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 42

Moving on to step 2:
If we divide 63 by 42, we get 1 and a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 42 from 63, we get 21.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 42

Moving on to step 3:
If we divide 217 by 42, we get 5 and a remainder of 7.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
The remainder is 7 after subtracting 210 from 217.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 42

On to step 4:
42 goes into 78 1 times with a remainder of 36.
The next digit of our result is 1. 
Result so far: 151.0
Subtract 42 from 78 to get 36.
Include the next digit (8) from the dividend after 36, then repeat: 368 / 42

Advancing to step 5:
42 goes into 368 8 times with a remainder of 32.
The next digit of our result is 8. 
Result so far: 1518.0
If we take 336 away from 368, we end up with 32.
Grab the next digit (9) from the dividend, add it to 32, then carry on: 329 / 42

Step 6:
If we divide 329 by 42, we get 7 and a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 15187.0
Deduct 294 from 329 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.

On to step 7:
42 goes into 350 8 times with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 15187.8
If we subtract 336 from 350, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
42 can be fit into 140 3 times, resulting in a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 15187.83
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 9:
When dividing 140 by 42, we get 3 with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 15187.833
The remainder is 14 after subtracting 126 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 15187.833 with a remainder of 0.0014.