721859 ÷ 17 
Let's see how many times 17 fits into 721859.

Step 1:
17 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 17

Step 2:
17 can be fit into 72 4 times, resulting in a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 68 from 72, we get 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 17

Advancing to step 3:
The number 17 fits into 41 2 times, leaving a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 34 from 41 and we're left with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 17

Advancing to step 4:
When dividing 78 by 17, we get 4 with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 424.0
Subtracting 68 from 78 leaves us with 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 17

Going ahead to step 5:
If we divide 105 by 17, we get 6 and a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 4246.0
Subtracting 102 from 105 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 17

Step 6:
When dividing 39 by 17, we get 2 with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 42462.0
If we take 34 away from 39, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
The number 17 fits into 50 2 times, leaving a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 42462.2
Subtract 34 from 50 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 8:
17 goes into 160 9 times with a remainder of 7.
The next digit of our result is 9. 
Result so far: 42462.29
Subtracting 153 from 160 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 9:
17 goes into 70 4 times with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 42462.294
Subtracting 68 from 70 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
17 goes into 20 1 times with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 42462.2941
If we take 17 away from 20, we end up 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.

Let's proceed to step 11:
17 goes into 30 1 times with a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 42462.29411
Deduct 17 from 30 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The quotient of the division is 42462.29411, and the remainder is 1.3e-05.