48647990 ÷ 870 
Our goal is to divide 48647990 by 870.

Step 1:
When dividing 4 by 870, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 870

Advancing to step 2:
870 can be fit into 48 0 times, resulting in a remainder of 48.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 48 after subtracting 0 from 48.
Bring next digit (6) of the dividend behind the 48 and repeat the process: 486 / 870

Advancing to step 3:
870 can be fit into 486 0 times, resulting in a remainder of 486.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 486 after subtracting 0 from 486.
Grab the next digit (4) from the dividend, add it to 486, then carry on: 4864 / 870

Going ahead to step 4:
The number 870 fits into 4864 5 times, leaving a remainder of 514.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 4350 from 4864 to get 514.
Take the next digit (7) from the dividend and append it to 514, then repeat: 5147 / 870

Advancing to step 5:
When dividing 5147 by 870, we get 5 with a remainder of 797.
Use 5 as the next digit of our solution. 
Result so far: 55.0
If we take 4350 away from 5147, we end up with 797.
Fetch the next digit (9) from the dividend, attach it to 797 and continue: 7979 / 870

Let's proceed to step 6:
When dividing 7979 by 870, we get 9 with a remainder of 149.
Write down 9 as next digit of the result. 
Result so far: 559.0
If we take 7830 away from 7979, we end up with 149.
Include the next digit (9) from the dividend after 149, then repeat: 1499 / 870

Going ahead to step 7:
If we divide 1499 by 870, we get 1 and a remainder of 629.
The number 1 becomes the next digit in our result. 
Result so far: 5591.0
Subtracting 870 from 1499 leaves us with 629.
Take the next digit (0) from the dividend and append it to 629, then repeat: 6290 / 870

Moving on to step 8:
870 can be fit into 6290 7 times, resulting in a remainder of 200.
Put 7 as the next digit of the answer. 
Result so far: 55917.0
If we take 6090 away from 6290, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 9:
When dividing 2000 by 870, we get 2 with a remainder of 260.
Record the quotient 2 as the next digit in the result. 
Result so far: 55917.2
Deduct 1740 from 2000 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 10:
870 can be fit into 2600 2 times, resulting in a remainder of 860.
Write down 2 as next digit of the result. 
Result so far: 55917.22
Subtract 1740 from 2600 to get 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8600, and continue the process.

After the division, we end up with 55917.22 and a remainder of 0.86.