201639 ÷ 87 
We want to divide 201639 by 87.

Advancing to step 1:
87 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 87

On to step 2:
20 divided by 87 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 87

Advancing to step 3:
87 can be fit into 201 2 times, resulting in a remainder of 27.
The next digit of our result is 2. 
Result so far: 2.0
If we take 174 away from 201, we end up with 27.
Append the next digit (6) from the dividend to 27 and continue with: 276 / 87

Step 4:
If we divide 276 by 87, we get 3 and a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
If we subtract 261 from 276, we get 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 87

Step 5:
If we divide 153 by 87, we get 1 and a remainder of 66.
The next digit of our result is 1. 
Result so far: 231.0
Subtract 87 from 153 to get 66.
Fetch the next digit (9) from the dividend, attach it to 66 and continue: 669 / 87

Moving on to step 6:
If we divide 669 by 87, we get 7 and a remainder of 60.
The next digit of our result is 7. 
Result so far: 2317.0
Deduct 609 from 669 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 7:
The number 87 fits into 600 6 times, leaving a remainder of 78.
Write down 6 as next digit of the result. 
Result so far: 2317.6
If we take 522 away from 600, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 8:
87 goes into 780 8 times with a remainder of 84.
The number 8 becomes the next digit in our result. 
Result so far: 2317.68
Subtract 696 from 780 to get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 9:
The number 87 fits into 840 9 times, leaving a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 2317.689
If we subtract 783 from 840, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 10:
When dividing 570 by 87, we get 6 with a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 2317.6896
Deduct 522 from 570 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 11:
87 goes into 480 5 times with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 2317.68965
Subtract 435 from 480 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 12:
When dividing 450 by 87, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 2317.689655
If we subtract 435 from 450, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 2317.689655 with a remaining 1.5e-06.