We're dividing 1262139 by 688 
Let's see how many times 688 fits into 1262139.

Step 1:
The number 688 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 688

Advancing to step 2:
688 goes into 12 0 times with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 688

Advancing to step 3:
The number 688 fits into 126 0 times, leaving a remainder of 126.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 126 after subtracting 0 from 126.
Take the next digit (2) from the dividend and append it to 126, then repeat: 1262 / 688

Moving on to step 4:
When dividing 1262 by 688, we get 1 with a remainder of 574.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 688 from 1262 and we're left with 574.
Fetch the next digit (1) from the dividend, attach it to 574 and continue: 5741 / 688

Step 5:
The number 688 fits into 5741 8 times, leaving a remainder of 237.
Write down 8 as next digit of the result. 
Result so far: 18.0
Deduct 5504 from 5741 and we're left with 237.
Bring next digit (3) of the dividend behind the 237 and repeat the process: 2373 / 688

On to step 6:
2373 divided by 688 is 3 with a remainder of 309.
Put 3 as the next digit of the answer. 
Result so far: 183.0
The remainder is 309 after subtracting 2064 from 2373.
Bring next digit (9) of the dividend behind the 309 and repeat the process: 3099 / 688

Advancing to step 7:
When dividing 3099 by 688, we get 4 with a remainder of 347.
Use 4 as the next digit of our solution. 
Result so far: 1834.0
The remainder is 347 after subtracting 2752 from 3099.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

Advancing to step 8:
688 can be fit into 3470 5 times, resulting in a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 1834.5
If we take 3440 away from 3470, we end up 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.

On to step 9:
When dividing 300 by 688, we get 0 with a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 1834.5
The remainder is 300 after subtracting 0 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 10:
3000 divided by 688 is 4 with a remainder of 248.
The number 4 becomes the next digit in our result. 
Result so far: 1834.504
Deduct 2752 from 3000 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 11:
If we divide 2480 by 688, we get 3 and a remainder of 416.
The number 3 becomes the next digit in our result. 
Result so far: 1834.5043
Subtracting 2064 from 2480 leaves us with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

On to step 12:
The number 688 fits into 4160 6 times, leaving a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 1834.50436
Subtracting 4128 from 4160 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 13:
If we divide 320 by 688, we get 0 and a remainder of 320.
The number 0 becomes the next digit in our result. 
Result so far: 1834.50436
The remainder is 320 after subtracting 0 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 14:
3200 divided by 688 is 4 with a remainder of 448.
Put 4 as the next digit of the answer. 
Result so far: 1834.5043604
Deduct 2752 from 3200 and we're left with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Moving on to step 15:
When dividing 4480 by 688, we get 6 with a remainder of 352.
The number 6 becomes the next digit in our result. 
Result so far: 1834.50436046
Subtracting 4128 from 4480 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

The final result is 1834.50436046 with a remainder of 3.52e-07.