213639 ÷ 70 
The aim is to understand the frequency of 70 in 213639.

Let's proceed to step 1:
When dividing 2 by 70, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 70

Going ahead to step 2:
If we divide 21 by 70, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 70

Step 3:
70 goes into 213 3 times with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 210 from 213 and we're left with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 70

Going ahead to step 4:
70 goes into 36 0 times with a remainder of 36.
Put 0 as the next digit of the answer. 
Result so far: 30.0
Deduct 0 from 36 and we're left with 36.
Fetch the next digit (3) from the dividend, attach it to 36 and continue: 363 / 70

Going ahead to step 5:
70 goes into 363 5 times with a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 305.0
If we take 350 away from 363, we end up with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 70

Advancing to step 6:
70 can be fit into 139 1 times, resulting in a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 3051.0
Subtracting 70 from 139 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.

Step 7:
The number 70 fits into 690 9 times, leaving a remainder of 60.
The number 9 becomes the next digit in our result. 
Result so far: 3051.9
The remainder is 60 after subtracting 630 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
When dividing 600 by 70, we get 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 3051.98
Subtracting 560 from 600 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
When dividing 400 by 70, we get 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 3051.985
If we take 350 away from 400, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
70 can be fit into 500 7 times, resulting in a remainder of 10.
The next digit of our result is 7. 
Result so far: 3051.9857
Deduct 490 from 500 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 11:
When dividing 100 by 70, we get 1 with a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 3051.98571
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.

Advancing to step 12:
If we divide 300 by 70, we get 4 and a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 3051.985714
The remainder is 20 after subtracting 280 from 300.
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 13:
The number 70 fits into 200 2 times, leaving a remainder of 60.
The number 2 becomes the next digit in our result. 
Result so far: 3051.9857142
The remainder is 60 after subtracting 140 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 14:
The number 70 fits into 600 8 times, leaving a remainder of 40.
The next digit of our result is 8. 
Result so far: 3051.98571428
Deduct 560 from 600 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 3051.98571428 with a remaining 4e-08.