21640747 divided by 70 
The aim is to understand the frequency of 70 in 21640747.

On to step 1:
If we divide 2 by 70, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 70

Let's proceed to step 2:
When dividing 21 by 70, we get 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Grab the next digit (6) from the dividend, add it to 21, then carry on: 216 / 70

Step 3:
216 divided by 70 is 3 with a remainder of 6.
The next digit of our result is 3. 
Result so far: 3.0
If we take 210 away from 216, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 70

Step 4:
If we divide 64 by 70, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 30.0
If we subtract 0 from 64, we get 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 70

Going ahead to step 5:
70 goes into 640 9 times with a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 309.0
Deduct 630 from 640 and we're left with 10.
Grab the next digit (7) from the dividend, add it to 10, then carry on: 107 / 70

Moving on to step 6:
70 goes into 107 1 times with a remainder of 37.
Use 1 as the next digit of our solution. 
Result so far: 3091.0
If we take 70 away from 107, we end up with 37.
Grab the next digit (4) from the dividend, add it to 37, then carry on: 374 / 70

On to step 7:
70 goes into 374 5 times with a remainder of 24.
Use 5 as the next digit of our solution. 
Result so far: 30915.0
Subtract 350 from 374 to get 24.
Append the next digit (7) from the dividend to 24 and continue with: 247 / 70

Advancing to step 8:
247 divided by 70 is 3 with a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 309153.0
If we take 210 away from 247, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 9:
The number 70 fits into 370 5 times, leaving a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 309153.5
Deduct 350 from 370 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.

Going ahead to step 10:
If we divide 200 by 70, we get 2 and a remainder of 60.
Put 2 as the next digit of the answer. 
Result so far: 309153.52
If we subtract 140 from 200, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 11:
If we divide 600 by 70, we get 8 and a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 309153.528
If we subtract 560 from 600, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 12:
When dividing 400 by 70, we get 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 309153.5285
Subtract 350 from 400 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
70 can be fit into 500 7 times, resulting in a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 309153.52857
The remainder is 10 after subtracting 490 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 14:
70 goes into 100 1 times with a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 309153.528571
Subtract 70 from 100 to get 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 15:
The number 70 fits into 300 4 times, leaving a remainder of 20.
The next digit of our result is 4. 
Result so far: 309153.5285714
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.

Step 16:
70 goes into 200 2 times with a remainder of 60.
Put 2 as the next digit of the answer. 
Result so far: 309153.52857142
Deduct 140 from 200 and we're left 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.

The quotient of the division is 309153.52857142, and the remainder is 6e-08.