72124545 ÷ 307 
We want to divide 72124545 by 307.

On to step 1:
If we divide 7 by 307, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 307

Step 2:
If we divide 72 by 307, we get 0 and a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 307

On to step 3:
307 can be fit into 721 2 times, resulting in a remainder of 107.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 107 after subtracting 614 from 721.
Append the next digit (2) from the dividend to 107 and continue with: 1072 / 307

Step 4:
The number 307 fits into 1072 3 times, leaving a remainder of 151.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
If we subtract 921 from 1072, we get 151.
Take the next digit (4) from the dividend and append it to 151, then repeat: 1514 / 307

On to step 5:
1514 divided by 307 is 4 with a remainder of 286.
The next digit of our result is 4. 
Result so far: 234.0
If we subtract 1228 from 1514, we get 286.
Bring next digit (5) of the dividend behind the 286 and repeat the process: 2865 / 307

Step 6:
The number 307 fits into 2865 9 times, leaving a remainder of 102.
Record the quotient 9 as the next digit in the result. 
Result so far: 2349.0
The remainder is 102 after subtracting 2763 from 2865.
Include the next digit (4) from the dividend after 102, then repeat: 1024 / 307

Moving on to step 7:
1024 divided by 307 is 3 with a remainder of 103.
Use 3 as the next digit of our solution. 
Result so far: 23493.0
Subtract 921 from 1024 to get 103.
Include the next digit (5) from the dividend after 103, then repeat: 1035 / 307

Step 8:
If we divide 1035 by 307, we get 3 and a remainder of 114.
The number 3 becomes the next digit in our result. 
Result so far: 234933.0
The remainder is 114 after subtracting 921 from 1035.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Let's proceed to step 9:
When dividing 1140 by 307, we get 3 with a remainder of 219.
The number 3 becomes the next digit in our result. 
Result so far: 234933.3
Subtracting 921 from 1140 leaves us with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Let's proceed to step 10:
When dividing 2190 by 307, we get 7 with a remainder of 41.
Use 7 as the next digit of our solution. 
Result so far: 234933.37
Subtract 2149 from 2190 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 11:
When dividing 410 by 307, we get 1 with a remainder of 103.
Use 1 as the next digit of our solution. 
Result so far: 234933.371
Subtract 307 from 410 to get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Step 12:
If we divide 1030 by 307, we get 3 and a remainder of 109.
Use 3 as the next digit of our solution. 
Result so far: 234933.3713
Subtracting 921 from 1030 leaves us with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Going ahead to step 13:
307 goes into 1090 3 times with a remainder of 169.
The number 3 becomes the next digit in our result. 
Result so far: 234933.37133
Subtracting 921 from 1090 leaves us with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

The final result is 234933.37133 with a remainder of 0.000169.