We divide 140037 by 81
The aim is to understand the frequency of 81 in 140037.

On to step 1:
1 divided by 81 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 81

Moving on to step 2:
When dividing 14 by 81, we get 0 with a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 14, we end up with 14.
Append the next digit (0) from the dividend to 14 and continue with: 140 / 81

Step 3:
If we divide 140 by 81, we get 1 and a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 81 from 140, we get 59.
Append the next digit (0) from the dividend to 59 and continue with: 590 / 81

Step 4:
590 divided by 81 is 7 with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 567 from 590 to get 23.
Bring next digit (3) of the dividend behind the 23 and repeat the process: 233 / 81

Let's proceed to step 5:
81 goes into 233 2 times with a remainder of 71.
Record the quotient 2 as the next digit in the result. 
Result so far: 172.0
The remainder is 71 after subtracting 162 from 233.
Take the next digit (7) from the dividend and append it to 71, then repeat: 717 / 81

Moving on to step 6:
When dividing 717 by 81, we get 8 with a remainder of 69.
Record the quotient 8 as the next digit in the result. 
Result so far: 1728.0
The remainder is 69 after subtracting 648 from 717.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 7:
If we divide 690 by 81, we get 8 and a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 1728.8
Subtract 648 from 690 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 8:
When dividing 420 by 81, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 1728.85
Subtract 405 from 420 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
150 divided by 81 is 1 with a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 1728.851
Subtracting 81 from 150 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 10:
The number 81 fits into 690 8 times, leaving a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 1728.8518
If we take 648 away from 690, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 11:
81 can be fit into 420 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 1728.85185
If we subtract 405 from 420, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 12:
81 can be fit into 150 1 times, resulting in a remainder of 69.
The next digit of our result is 1. 
Result so far: 1728.851851
If we take 81 away from 150, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 13:
81 can be fit into 690 8 times, resulting in a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 1728.8518518
Subtract 648 from 690 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 14:
If we divide 420 by 81, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 1728.85185185
If we take 405 away from 420, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The quotient of the division is 1728.85185185, and the remainder is 1.5e-08.