72140721 ÷ 168 
We want to divide 72140721 by 168.

Moving on to step 1:
If we divide 7 by 168, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 168

Let's proceed to step 2:
72 divided by 168 is 0 with a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Fetch the next digit (1) from the dividend, attach it to 72 and continue: 721 / 168

Going ahead to step 3:
If we divide 721 by 168, we get 4 and a remainder of 49.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 49 after subtracting 672 from 721.
Fetch the next digit (4) from the dividend, attach it to 49 and continue: 494 / 168

Advancing to step 4:
When dividing 494 by 168, we get 2 with a remainder of 158.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 158 after subtracting 336 from 494.
Fetch the next digit (0) from the dividend, attach it to 158 and continue: 1580 / 168

Advancing to step 5:
168 goes into 1580 9 times with a remainder of 68.
The next digit of our result is 9. 
Result so far: 429.0
Deduct 1512 from 1580 and we're left with 68.
Grab the next digit (7) from the dividend, add it to 68, then carry on: 687 / 168

Step 6:
687 divided by 168 is 4 with a remainder of 15.
Write down 4 as next digit of the result. 
Result so far: 4294.0
If we subtract 672 from 687, we get 15.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 168

On to step 7:
If we divide 152 by 168, we get 0 and a remainder of 152.
Put 0 as the next digit of the answer. 
Result so far: 42940.0
Subtract 0 from 152 to get 152.
Take the next digit (1) from the dividend and append it to 152, then repeat: 1521 / 168

Moving on to step 8:
When dividing 1521 by 168, we get 9 with a remainder of 9.
The next digit of our result is 9. 
Result so far: 429409.0
The remainder is 9 after subtracting 1512 from 1521.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 9:
The number 168 fits into 90 0 times, leaving a remainder of 90.
The next digit of our result is 0. 
Result so far: 429409.0
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 10:
168 goes into 900 5 times with a remainder of 60.
Record the quotient 5 as the next digit in the result. 
Result so far: 429409.05
Subtracting 840 from 900 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 11:
168 can be fit into 600 3 times, resulting in a remainder of 96.
The next digit of our result is 3. 
Result so far: 429409.053
If we subtract 504 from 600, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 12:
960 divided by 168 is 5 with a remainder of 120.
The next digit of our result is 5. 
Result so far: 429409.0535
If we take 840 away from 960, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 13:
1200 divided by 168 is 7 with a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 429409.05357
The remainder is 24 after subtracting 1176 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 14:
240 divided by 168 is 1 with a remainder of 72.
Write down 1 as next digit of the result. 
Result so far: 429409.053571
The remainder is 72 after subtracting 168 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 15:
168 can be fit into 720 4 times, resulting in a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 429409.0535714
Subtract 672 from 720 to 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 16:
If we divide 480 by 168, we get 2 and a remainder of 144.
Record the quotient 2 as the next digit in the result. 
Result so far: 429409.05357142
Deduct 336 from 480 and we're left with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

The quotient of the division is 429409.05357142, and the remainder is 1.44e-07.