81272551 divided by 70 
The aim is to understand the frequency of 70 in 81272551.

Advancing to step 1:
When dividing 8 by 70, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 70

Let's proceed to step 2:
70 goes into 81 1 times with a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 11 after subtracting 70 from 81.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 70

Step 3:
If we divide 112 by 70, we get 1 and a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 70 from 112 and we're left with 42.
Take the next digit (7) from the dividend and append it to 42, then repeat: 427 / 70

On to step 4:
When dividing 427 by 70, we get 6 with a remainder of 7.
Write down 6 as next digit of the result. 
Result so far: 116.0
Subtract 420 from 427 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 70

Step 5:
70 goes into 72 1 times with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1161.0
If we take 70 away from 72, we end up with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 70

Moving on to step 6:
When dividing 25 by 70, we get 0 with a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 11610.0
The remainder is 25 after subtracting 0 from 25.
Append the next digit (5) from the dividend to 25 and continue with: 255 / 70

Moving on to step 7:
70 goes into 255 3 times with a remainder of 45.
Use 3 as the next digit of our solution. 
Result so far: 116103.0
Subtract 210 from 255 to get 45.
Grab the next digit (1) from the dividend, add it to 45, then carry on: 451 / 70

Moving on to step 8:
451 divided by 70 is 6 with a remainder of 31.
The next digit of our result is 6. 
Result so far: 1161036.0
If we subtract 420 from 451, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 9:
70 can be fit into 310 4 times, resulting in a remainder of 30.
Write down 4 as next digit of the result. 
Result so far: 1161036.4
Deduct 280 from 310 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 10:
300 divided by 70 is 4 with a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 1161036.44
Deduct 280 from 300 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 1161036.44 and a remainder of 0.02.