399430 ÷ 73 
We're looking to find how many times 73 goes into 399430.

On to step 1:
The number 73 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 73

Step 2:
When dividing 39 by 73, we get 0 with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 73

On to step 3:
When dividing 399 by 73, we get 5 with a remainder of 34.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 34 after subtracting 365 from 399.
Take the next digit (4) from the dividend and append it to 34, then repeat: 344 / 73

On to step 4:
73 goes into 344 4 times with a remainder of 52.
Write down 4 as next digit of the result. 
Result so far: 54.0
If we subtract 292 from 344, we get 52.
Grab the next digit (3) from the dividend, add it to 52, then carry on: 523 / 73

Step 5:
If we divide 523 by 73, we get 7 and a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 547.0
If we subtract 511 from 523, we get 12.
Include the next digit (0) from the dividend after 12, then repeat: 120 / 73

Step 6:
When dividing 120 by 73, we get 1 with a remainder of 47.
Record the quotient 1 as the next digit in the result. 
Result so far: 5471.0
If we take 73 away from 120, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 7:
73 goes into 470 6 times with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 5471.6
If we subtract 438 from 470, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 8:
The number 73 fits into 320 4 times, leaving a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 5471.64
Subtracting 292 from 320 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 9:
73 can be fit into 280 3 times, resulting in a remainder of 61.
Record the quotient 3 as the next digit in the result. 
Result so far: 5471.643
Deduct 219 from 280 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 10:
73 goes into 610 8 times with a remainder of 26.
Use 8 as the next digit of our solution. 
Result so far: 5471.6438
If we subtract 584 from 610, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 11:
If we divide 260 by 73, we get 3 and a remainder of 41.
Use 3 as the next digit of our solution. 
Result so far: 5471.64383
Subtracting 219 from 260 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 12:
73 goes into 410 5 times with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 5471.643835
If we subtract 365 from 410, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 13:
When dividing 450 by 73, we get 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 5471.6438356
If we take 438 away from 450, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 14:
120 divided by 73 is 1 with a remainder of 47.
Write down 1 as next digit of the result. 
Result so far: 5471.64383561
The remainder is 47 after subtracting 73 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Our division results in 5471.64383561 with a remaining 4.7e-08.