We're dividing 661230 by 87 
We want to divide 661230 by 87.

Let's proceed to step 1:
87 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 87

Going ahead to step 2:
When dividing 66 by 87, we get 0 with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Fetch the next digit (1) from the dividend, attach it to 66 and continue: 661 / 87

Advancing to step 3:
661 divided by 87 is 7 with a remainder of 52.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtracting 609 from 661 leaves us with 52.
Bring next digit (2) of the dividend behind the 52 and repeat the process: 522 / 87

Let's proceed to step 4:
522 divided by 87 is 6 with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 76.0
If we subtract 522 from 522, we get 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 87

Step 5:
87 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 760.0
If we subtract 0 from 3, we get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 87

Advancing to step 6:
87 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 7600.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 7:
When dividing 300 by 87, we get 3 with a remainder of 39.
Write down 3 as next digit of the result. 
Result so far: 7600.3
The remainder is 39 after subtracting 261 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 8:
When dividing 390 by 87, we get 4 with a remainder of 42.
Write down 4 as next digit of the result. 
Result so far: 7600.34
Subtract 348 from 390 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 9:
87 can be fit into 420 4 times, resulting in a remainder of 72.
The number 4 becomes the next digit in our result. 
Result so far: 7600.344
Deduct 348 from 420 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The quotient of the division is 7600.344, and the remainder is 0.0072.