We divide 351719 by 86
Our goal is to divide 351719 by 86.

Moving on to step 1:
The number 86 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 86

On to step 2:
86 goes into 35 0 times with a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Bring next digit (1) of the dividend behind the 35 and repeat the process: 351 / 86

Advancing to step 3:
When dividing 351 by 86, we get 4 with a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 344 from 351 and we're left with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 86

Let's proceed to step 4:
86 can be fit into 77 0 times, resulting in a remainder of 77.
The next digit of our result is 0. 
Result so far: 40.0
Deduct 0 from 77 and we're left with 77.
Append the next digit (1) from the dividend to 77 and continue with: 771 / 86

Step 5:
If we divide 771 by 86, we get 8 and a remainder of 83.
The number 8 becomes the next digit in our result. 
Result so far: 408.0
The remainder is 83 after subtracting 688 from 771.
Include the next digit (9) from the dividend after 83, then repeat: 839 / 86

Step 6:
839 divided by 86 is 9 with a remainder of 65.
Record the quotient 9 as the next digit in the result. 
Result so far: 4089.0
The remainder is 65 after subtracting 774 from 839.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 7:
The number 86 fits into 650 7 times, leaving a remainder of 48.
Use 7 as the next digit of our solution. 
Result so far: 4089.7
If we subtract 602 from 650, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 8:
480 divided by 86 is 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 4089.75
Subtract 430 from 480 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
86 goes into 500 5 times with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 4089.755
If we subtract 430 from 500, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 4089.755, and the remainder is 0.007.