188488 ÷ 42 
We want to divide 188488 by 42.

On to step 1:
When dividing 1 by 42, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 42

Moving on to step 2:
When dividing 18 by 42, we get 0 with a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 42

On to step 3:
42 goes into 188 4 times with a remainder of 20.
The next digit of our result is 4. 
Result so far: 4.0
If we take 168 away from 188, we end up with 20.
Bring next digit (4) of the dividend behind the 20 and repeat the process: 204 / 42

Going ahead to step 4:
42 can be fit into 204 4 times, resulting in a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 44.0
Subtract 168 from 204 to get 36.
Grab the next digit (8) from the dividend, add it to 36, then carry on: 368 / 42

Going ahead to step 5:
42 goes into 368 8 times with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 448.0
Subtract 336 from 368 to get 32.
Include the next digit (8) from the dividend after 32, then repeat: 328 / 42

Let's proceed to step 6:
When dividing 328 by 42, we get 7 with a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 4487.0
If we take 294 away from 328, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 7:
340 divided by 42 is 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 4487.8
Subtracting 336 from 340 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
40 divided by 42 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 4487.8
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
42 can be fit into 400 9 times, resulting in a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 4487.809
The remainder is 22 after subtracting 378 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 10:
If we divide 220 by 42, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 4487.8095
If we take 210 away from 220, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
The number 42 fits into 100 2 times, leaving a remainder of 16.
The next digit of our result is 2. 
Result so far: 4487.80952
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 12:
If we divide 160 by 42, we get 3 and a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 4487.809523
If we subtract 126 from 160, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 13:
When dividing 340 by 42, we get 8 with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 4487.8095238
Subtract 336 from 340 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 14:
The number 42 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 4487.8095238
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 4487.8095238 with a remaining 4e-08.