72066167 divided by 431 
Our goal is to divide 72066167 by 431.

Let's proceed to step 1:
When dividing 7 by 431, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 431

Step 2:
431 goes into 72 0 times with a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Fetch the next digit (0) from the dividend, attach it to 72 and continue: 720 / 431

Moving on to step 3:
720 divided by 431 is 1 with a remainder of 289.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 431 from 720, we get 289.
Fetch the next digit (6) from the dividend, attach it to 289 and continue: 2896 / 431

Let's proceed to step 4:
431 can be fit into 2896 6 times, resulting in a remainder of 310.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtracting 2586 from 2896 leaves us with 310.
Fetch the next digit (6) from the dividend, attach it to 310 and continue: 3106 / 431

Step 5:
431 can be fit into 3106 7 times, resulting in a remainder of 89.
The next digit of our result is 7. 
Result so far: 167.0
Subtract 3017 from 3106 to get 89.
Append the next digit (1) from the dividend to 89 and continue with: 891 / 431

Going ahead to step 6:
431 goes into 891 2 times with a remainder of 29.
Put 2 as the next digit of the answer. 
Result so far: 1672.0
If we take 862 away from 891, we end up with 29.
Fetch the next digit (6) from the dividend, attach it to 29 and continue: 296 / 431

Going ahead to step 7:
The number 431 fits into 296 0 times, leaving a remainder of 296.
Use 0 as the next digit of our solution. 
Result so far: 16720.0
Subtract 0 from 296 to get 296.
Bring next digit (7) of the dividend behind the 296 and repeat the process: 2967 / 431

On to step 8:
431 can be fit into 2967 6 times, resulting in a remainder of 381.
Put 6 as the next digit of the answer. 
Result so far: 167206.0
If we subtract 2586 from 2967, we get 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

On to step 9:
431 can be fit into 3810 8 times, resulting in a remainder of 362.
The number 8 becomes the next digit in our result. 
Result so far: 167206.8
If we subtract 3448 from 3810, we get 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

On to step 10:
431 can be fit into 3620 8 times, resulting in a remainder of 172.
Record the quotient 8 as the next digit in the result. 
Result so far: 167206.88
Subtract 3448 from 3620 to get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

The quotient of the division is 167206.88, and the remainder is 0.172.