We look at the division of 870388 by 48 
We want to divide 870388 by 48.

On to step 1:
8 divided by 48 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 48

Advancing to step 2:
If we divide 87 by 48, we get 1 and a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 48 from 87, we get 39.
Append the next digit (0) from the dividend to 39 and continue with: 390 / 48

Step 3:
390 divided by 48 is 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
Subtract 384 from 390 to get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 48

Step 4:
48 goes into 63 1 times with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 181.0
Deduct 48 from 63 and we're left with 15.
Bring next digit (8) of the dividend behind the 15 and repeat the process: 158 / 48

On to step 5:
When dividing 158 by 48, we get 3 with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 1813.0
The remainder is 14 after subtracting 144 from 158.
Take the next digit (8) from the dividend and append it to 14, then repeat: 148 / 48

On to step 6:
If we divide 148 by 48, we get 3 and a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 18133.0
If we subtract 144 from 148, we 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.

Going ahead to step 7:
40 divided by 48 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 18133.0
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.

Step 8:
400 divided by 48 is 8 with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 18133.08
If we subtract 384 from 400, we 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.

Advancing to step 9:
160 divided by 48 is 3 with a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 18133.083
If we subtract 144 from 160, we 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.

Moving on to step 10:
When dividing 160 by 48, we get 3 with a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 18133.0833
If we subtract 144 from 160, we 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.

Our division results in 18133.0833 with a remaining 0.00016.