72437503 ÷ 621 
We want to figure out the number of times 72437503 can be divided by 621.

Step 1:
621 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 621

Advancing to step 2:
When dividing 72 by 621, we get 0 with a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Bring next digit (4) of the dividend behind the 72 and repeat the process: 724 / 621

Let's proceed to step 3:
When dividing 724 by 621, we get 1 with a remainder of 103.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 621 from 724, we get 103.
Grab the next digit (3) from the dividend, add it to 103, then carry on: 1033 / 621

Step 4:
621 can be fit into 1033 1 times, resulting in a remainder of 412.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Deduct 621 from 1033 and we're left with 412.
Include the next digit (7) from the dividend after 412, then repeat: 4127 / 621

Going ahead to step 5:
When dividing 4127 by 621, we get 6 with a remainder of 401.
Use 6 as the next digit of our solution. 
Result so far: 116.0
If we take 3726 away from 4127, we end up with 401.
Bring next digit (5) of the dividend behind the 401 and repeat the process: 4015 / 621

Moving on to step 6:
4015 divided by 621 is 6 with a remainder of 289.
The next digit of our result is 6. 
Result so far: 1166.0
If we take 3726 away from 4015, we end up with 289.
Grab the next digit (0) from the dividend, add it to 289, then carry on: 2890 / 621

Step 7:
When dividing 2890 by 621, we get 4 with a remainder of 406.
Use 4 as the next digit of our solution. 
Result so far: 11664.0
Subtract 2484 from 2890 to get 406.
Take the next digit (3) from the dividend and append it to 406, then repeat: 4063 / 621

Advancing to step 8:
4063 divided by 621 is 6 with a remainder of 337.
The number 6 becomes the next digit in our result. 
Result so far: 116646.0
Deduct 3726 from 4063 and we're left with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

On to step 9:
The number 621 fits into 3370 5 times, leaving a remainder of 265.
The number 5 becomes the next digit in our result. 
Result so far: 116646.5
If we take 3105 away from 3370, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Let's proceed to step 10:
When dividing 2650 by 621, we get 4 with a remainder of 166.
The number 4 becomes the next digit in our result. 
Result so far: 116646.54
Subtract 2484 from 2650 to get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Moving on to step 11:
The number 621 fits into 1660 2 times, leaving a remainder of 418.
Use 2 as the next digit of our solution. 
Result so far: 116646.542
Subtract 1242 from 1660 to get 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Let's proceed to step 12:
621 can be fit into 4180 6 times, resulting in a remainder of 454.
Put 6 as the next digit of the answer. 
Result so far: 116646.5426
Subtract 3726 from 4180 to get 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Moving on to step 13:
4540 divided by 621 is 7 with a remainder of 193.
Use 7 as the next digit of our solution. 
Result so far: 116646.54267
Subtract 4347 from 4540 to get 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Step 14:
When dividing 1930 by 621, we get 3 with a remainder of 67.
The next digit of our result is 3. 
Result so far: 116646.542673
Subtract 1863 from 1930 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 15:
670 divided by 621 is 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 116646.5426731
Subtract 621 from 670 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 16:
When dividing 490 by 621, we get 0 with a remainder of 490.
Use 0 as the next digit of our solution. 
Result so far: 116646.5426731
The remainder is 490 after subtracting 0 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

The quotient of the division is 116646.5426731, and the remainder is 4.9e-07.