We're dividing 70423430 by 999 
We want to figure out the number of times 70423430 can be divided by 999.

On to step 1:
When dividing 7 by 999, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 999

Moving on to step 2:
When dividing 70 by 999, we get 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Grab the next digit (4) from the dividend, add it to 70, then carry on: 704 / 999

Advancing to step 3:
When dividing 704 by 999, we get 0 with a remainder of 704.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 704 after subtracting 0 from 704.
Include the next digit (2) from the dividend after 704, then repeat: 7042 / 999

Advancing to step 4:
999 goes into 7042 7 times with a remainder of 49.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 49 after subtracting 6993 from 7042.
Take the next digit (3) from the dividend and append it to 49, then repeat: 493 / 999

Advancing to step 5:
493 divided by 999 is 0 with a remainder of 493.
The number 0 becomes the next digit in our result. 
Result so far: 70.0
Subtract 0 from 493 to get 493.
Bring next digit (4) of the dividend behind the 493 and repeat the process: 4934 / 999

Going ahead to step 6:
4934 divided by 999 is 4 with a remainder of 938.
The number 4 becomes the next digit in our result. 
Result so far: 704.0
The remainder is 938 after subtracting 3996 from 4934.
Include the next digit (3) from the dividend after 938, then repeat: 9383 / 999

Going ahead to step 7:
If we divide 9383 by 999, we get 9 and a remainder of 392.
Use 9 as the next digit of our solution. 
Result so far: 7049.0
Deduct 8991 from 9383 and we're left with 392.
Append the next digit (0) from the dividend to 392 and continue with: 3920 / 999

Let's proceed to step 8:
999 can be fit into 3920 3 times, resulting in a remainder of 923.
Put 3 as the next digit of the answer. 
Result so far: 70493.0
If we subtract 2997 from 3920, we get 923.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9230, and continue the process.

Going ahead to step 9:
999 goes into 9230 9 times with a remainder of 239.
The next digit of our result is 9. 
Result so far: 70493.9
If we subtract 8991 from 9230, we get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Let's proceed to step 10:
When dividing 2390 by 999, we get 2 with a remainder of 392.
Put 2 as the next digit of the answer. 
Result so far: 70493.92
The remainder is 392 after subtracting 1998 from 2390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 11:
999 goes into 3920 3 times with a remainder of 923.
Use 3 as the next digit of our solution. 
Result so far: 70493.923
Subtracting 2997 from 3920 leaves us with 923.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9230, and continue the process.

Step 12:
999 can be fit into 9230 9 times, resulting in a remainder of 239.
Put 9 as the next digit of the answer. 
Result so far: 70493.9239
If we take 8991 away from 9230, we end up with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Advancing to step 13:
999 can be fit into 2390 2 times, resulting in a remainder of 392.
The number 2 becomes the next digit in our result. 
Result so far: 70493.92392
Subtracting 1998 from 2390 leaves us with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Moving on to step 14:
999 can be fit into 3920 3 times, resulting in a remainder of 923.
The number 3 becomes the next digit in our result. 
Result so far: 70493.923923
If we take 2997 away from 3920, we end up with 923.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9230, and continue the process.

Step 15:
If we divide 9230 by 999, we get 9 and a remainder of 239.
Record the quotient 9 as the next digit in the result. 
Result so far: 70493.9239239
If we subtract 8991 from 9230, we get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Moving on to step 16:
999 goes into 2390 2 times with a remainder of 392.
Record the quotient 2 as the next digit in the result. 
Result so far: 70493.92392392
If we subtract 1998 from 2390, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

In conclusion, the division gives 70493.92392392 with a balance of 3.92e-07.