Let's divide 21910 by 70
We're looking to find how many times 70 goes into 21910.

Going ahead to step 1:
2 divided by 70 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 70

Step 2:
The number 70 fits into 21 0 times, leaving a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 70

On to step 3:
The number 70 fits into 219 3 times, leaving a remainder of 9.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 9 after subtracting 210 from 219.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 70

Advancing to step 4:
The number 70 fits into 91 1 times, leaving a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 31.0
Subtracting 70 from 91 leaves us with 21.
Fetch the next digit (0) from the dividend, attach it to 21 and continue: 210 / 70

Let's proceed to step 5:
The number 70 fits into 210 3 times, leaving a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 313.0
Subtracting 210 from 210 leaves us 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.

Advancing to step 6:
70 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 313.0
If we take 0 away from 0, 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.

Going ahead to step 7:
The number 70 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 313.0
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.

The final result is 313.0 with a remainder of 0.0.