402123 ÷ 73 
We want to figure out the number of times 402123 can be divided by 73.

Going ahead to step 1:
The number 73 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 73

Step 2:
40 divided by 73 is 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Append the next digit (2) from the dividend to 40 and continue with: 402 / 73

Advancing to step 3:
73 can be fit into 402 5 times, resulting in a remainder of 37.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 365 from 402 and we're left with 37.
Fetch the next digit (1) from the dividend, attach it to 37 and continue: 371 / 73

Let's proceed to step 4:
When dividing 371 by 73, we get 5 with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 55.0
Deduct 365 from 371 and we're left with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 73

On to step 5:
If we divide 62 by 73, we get 0 and a remainder of 62.
Use 0 as the next digit of our solution. 
Result so far: 550.0
Subtract 0 from 62 to get 62.
Bring next digit (3) of the dividend behind the 62 and repeat the process: 623 / 73

Going ahead to step 6:
If we divide 623 by 73, we get 8 and a remainder of 39.
The next digit of our result is 8. 
Result so far: 5508.0
If we take 584 away from 623, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 7:
When dividing 390 by 73, we get 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 5508.5
Subtract 365 from 390 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 8:
73 goes into 250 3 times with a remainder of 31.
The number 3 becomes the next digit in our result. 
Result so far: 5508.53
Subtracting 219 from 250 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 9:
If we divide 310 by 73, we get 4 and a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 5508.534
Subtracting 292 from 310 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
73 goes into 180 2 times with a remainder of 34.
Put 2 as the next digit of the answer. 
Result so far: 5508.5342
Subtracting 146 from 180 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 11:
When dividing 340 by 73, we get 4 with a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 5508.53424
If we subtract 292 from 340, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 12:
480 divided by 73 is 6 with a remainder of 42.
Use 6 as the next digit of our solution. 
Result so far: 5508.534246
Deduct 438 from 480 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 13:
73 can be fit into 420 5 times, resulting in a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 5508.5342465
Subtracting 365 from 420 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 14:
If we divide 550 by 73, we get 7 and a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 5508.53424657
Subtract 511 from 550 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 5508.53424657 and a remainder of 3.9e-08.