30973391 ÷ 3 
We want to figure out the number of times 30973391 can be divided by 3.

Let's proceed to step 1:
The number 3 fits into 3 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 3 from 3 and we're left with 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 3

On to step 2:
0 divided by 3 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtract 0 from 0 to get 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 3

Going ahead to step 3:
The number 3 fits into 9 3 times, leaving a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 103.0
Subtracting 9 from 9 leaves us with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 3

Step 4:
3 can be fit into 7 2 times, resulting in a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 1032.0
If we take 6 away from 7, we end up with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 3

Going ahead to step 5:
When dividing 13 by 3, we get 4 with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 10324.0
Subtracting 12 from 13 leaves us with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 3

On to step 6:
3 can be fit into 13 4 times, resulting in a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 103244.0
Subtract 12 from 13 to get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 3

On to step 7:
3 can be fit into 19 6 times, resulting in a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 1032446.0
If we subtract 18 from 19, we get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 3

On to step 8:
11 divided by 3 is 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 10324463.0
Subtracting 9 from 11 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.

Step 9:
When dividing 20 by 3, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 10324463.6
Deduct 18 from 20 and we're left 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.

On to step 10:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 10324463.66
If we take 18 away from 20, we end up 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.

The final result is 10324463.66 with a remainder of 0.002.