688629 divided by 4 
Let's see how many times 4 fits into 688629.

Let's proceed to step 1:
4 goes into 6 1 times with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 4 from 6 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 4

On to step 2:
4 can be fit into 28 7 times, resulting in a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 28 from 28 to get 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 4

On to step 3:
When dividing 8 by 4, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 172.0
Subtract 8 from 8 to get 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 4

On to step 4:
When dividing 6 by 4, we get 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1721.0
If we take 4 away from 6, we end up with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 4

Step 5:
22 divided by 4 is 5 with a remainder of 2.
The next digit of our result is 5. 
Result so far: 17215.0
Deduct 20 from 22 and we're left with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 4

On to step 6:
4 goes into 29 7 times with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 172157.0
Subtract 28 from 29 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
4 can be fit into 10 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 172157.2
The remainder is 2 after subtracting 8 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
4 can be fit into 20 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 172157.25
If we take 20 away from 20, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
4 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 172157.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
If we divide 0 by 4, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 172157.25
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 172157.25 with a remaining 0.0.