638453 divided by 87 
Let's see how many times 87 fits into 638453.

On to step 1:
The number 87 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 87

Advancing to step 2:
87 goes into 63 0 times with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Include the next digit (8) from the dividend after 63, then repeat: 638 / 87

Moving on to step 3:
87 goes into 638 7 times with a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtracting 609 from 638 leaves us with 29.
Grab the next digit (4) from the dividend, add it to 29, then carry on: 294 / 87

Step 4:
294 divided by 87 is 3 with a remainder of 33.
Use 3 as the next digit of our solution. 
Result so far: 73.0
Subtracting 261 from 294 leaves us with 33.
Grab the next digit (5) from the dividend, add it to 33, then carry on: 335 / 87

Advancing to step 5:
335 divided by 87 is 3 with a remainder of 74.
Write down 3 as next digit of the result. 
Result so far: 733.0
If we subtract 261 from 335, we get 74.
Append the next digit (3) from the dividend to 74 and continue with: 743 / 87

On to step 6:
When dividing 743 by 87, we get 8 with a remainder of 47.
The number 8 becomes the next digit in our result. 
Result so far: 7338.0
The remainder is 47 after subtracting 696 from 743.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 7:
87 can be fit into 470 5 times, resulting in a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 7338.5
Subtracting 435 from 470 leaves us 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.

Going ahead to step 8:
If we divide 350 by 87, we get 4 and a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 7338.54
If we subtract 348 from 350, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 9:
87 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 7338.54
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
When dividing 200 by 87, we get 2 with a remainder of 26.
Write down 2 as next digit of the result. 
Result so far: 7338.5402
Subtract 174 from 200 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 11:
The number 87 fits into 260 2 times, leaving a remainder of 86.
Record the quotient 2 as the next digit in the result. 
Result so far: 7338.54022
If we take 174 away from 260, we end up with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

After the division, we end up with 7338.54022 and a remainder of 8.6e-05.