72042913 ÷ 406 
We want to figure out the number of times 72042913 can be divided by 406.

On to step 1:
The number 406 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 406

Moving on to step 2:
406 can be fit into 72 0 times, resulting in a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Bring next digit (0) of the dividend behind the 72 and repeat the process: 720 / 406

Let's proceed to step 3:
When dividing 720 by 406, we get 1 with a remainder of 314.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 406 from 720 leaves us with 314.
Take the next digit (4) from the dividend and append it to 314, then repeat: 3144 / 406

On to step 4:
406 can be fit into 3144 7 times, resulting in a remainder of 302.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
If we take 2842 away from 3144, we end up with 302.
Take the next digit (2) from the dividend and append it to 302, then repeat: 3022 / 406

Advancing to step 5:
3022 divided by 406 is 7 with a remainder of 180.
Put 7 as the next digit of the answer. 
Result so far: 177.0
The remainder is 180 after subtracting 2842 from 3022.
Append the next digit (9) from the dividend to 180 and continue with: 1809 / 406

Going ahead to step 6:
If we divide 1809 by 406, we get 4 and a remainder of 185.
The number 4 becomes the next digit in our result. 
Result so far: 1774.0
The remainder is 185 after subtracting 1624 from 1809.
Grab the next digit (1) from the dividend, add it to 185, then carry on: 1851 / 406

Advancing to step 7:
406 goes into 1851 4 times with a remainder of 227.
The next digit of our result is 4. 
Result so far: 17744.0
If we take 1624 away from 1851, we end up with 227.
Include the next digit (3) from the dividend after 227, then repeat: 2273 / 406

On to step 8:
406 can be fit into 2273 5 times, resulting in a remainder of 243.
Put 5 as the next digit of the answer. 
Result so far: 177445.0
The remainder is 243 after subtracting 2030 from 2273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Advancing to step 9:
2430 divided by 406 is 5 with a remainder of 400.
Write down 5 as next digit of the result. 
Result so far: 177445.5
Deduct 2030 from 2430 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 10:
The number 406 fits into 4000 9 times, leaving a remainder of 346.
Record the quotient 9 as the next digit in the result. 
Result so far: 177445.59
If we subtract 3654 from 4000, we get 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Advancing to step 11:
406 goes into 3460 8 times with a remainder of 212.
Put 8 as the next digit of the answer. 
Result so far: 177445.598
If we subtract 3248 from 3460, we get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Going ahead to step 12:
The number 406 fits into 2120 5 times, leaving a remainder of 90.
Record the quotient 5 as the next digit in the result. 
Result so far: 177445.5985
If we subtract 2030 from 2120, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 13:
900 divided by 406 is 2 with a remainder of 88.
Write down 2 as next digit of the result. 
Result so far: 177445.59852
If we subtract 812 from 900, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 14:
406 can be fit into 880 2 times, resulting in a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 177445.598522
Deduct 812 from 880 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final outcome is 177445.598522, with a leftover of 6.8e-06.