We divide 688440 by 87
Let's see how many times 87 fits into 688440.

Step 1:
87 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 87

On to step 2:
The number 87 fits into 68 0 times, leaving a remainder of 68.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Bring next digit (8) of the dividend behind the 68 and repeat the process: 688 / 87

Advancing to step 3:
87 can be fit into 688 7 times, resulting in a remainder of 79.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 79 after subtracting 609 from 688.
Append the next digit (4) from the dividend to 79 and continue with: 794 / 87

Let's proceed to step 4:
87 can be fit into 794 9 times, resulting in a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 79.0
Subtracting 783 from 794 leaves us with 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 87

Moving on to step 5:
If we divide 114 by 87, we get 1 and a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 791.0
Subtracting 87 from 114 leaves us with 27.
Take the next digit (0) from the dividend and append it to 27, then repeat: 270 / 87

Advancing to step 6:
When dividing 270 by 87, we get 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 7913.0
Deduct 261 from 270 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
87 can be fit into 90 1 times, resulting in a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 7913.1
Deduct 87 from 90 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
If we divide 30 by 87, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 7913.1
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 9:
When dividing 300 by 87, we get 3 with a remainder of 39.
The next digit of our result is 3. 
Result so far: 7913.103
If we subtract 261 from 300, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 10:
87 goes into 390 4 times with a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 7913.1034
The remainder is 42 after subtracting 348 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 11:
If we divide 420 by 87, we get 4 and a remainder of 72.
The number 4 becomes the next digit in our result. 
Result so far: 7913.10344
Subtract 348 from 420 to get 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 final outcome is 7913.10344, with a leftover of 7.2e-05.