215999 ÷ 31 
We're looking to find how many times 31 goes into 215999.

On to step 1:
2 divided by 31 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 31

Let's proceed to step 2:
21 divided by 31 is 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 31

On to step 3:
215 divided by 31 is 6 with a remainder of 29.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 186 from 215 to get 29.
Include the next digit (9) from the dividend after 29, then repeat: 299 / 31

Step 4:
When dividing 299 by 31, we get 9 with a remainder of 20.
Write down 9 as next digit of the result. 
Result so far: 69.0
Subtract 279 from 299 to get 20.
Include the next digit (9) from the dividend after 20, then repeat: 209 / 31

Moving on to step 5:
31 goes into 209 6 times with a remainder of 23.
Write down 6 as next digit of the result. 
Result so far: 696.0
Deduct 186 from 209 and we're left with 23.
Grab the next digit (9) from the dividend, add it to 23, then carry on: 239 / 31

Going ahead to step 6:
239 divided by 31 is 7 with a remainder of 22.
The number 7 becomes the next digit in our result. 
Result so far: 6967.0
Deduct 217 from 239 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 7:
The number 31 fits into 220 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 6967.7
The remainder is 3 after subtracting 217 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 8:
The number 31 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 6967.7
Deduct 0 from 30 and we're left 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.

Let's proceed to step 9:
If we divide 300 by 31, we get 9 and a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 6967.709
Subtract 279 from 300 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 10:
210 divided by 31 is 6 with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 6967.7096
If we take 186 away from 210, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 11:
31 goes into 240 7 times with a remainder of 23.
The next digit of our result is 7. 
Result so far: 6967.70967
Deduct 217 from 240 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 12:
31 goes into 230 7 times with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 6967.709677
Subtract 217 from 230 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

After the division, we end up with 6967.709677 and a remainder of 1.3e-06.