80718494 ÷ 213 
The aim is to understand the frequency of 213 in 80718494.

Step 1:
8 divided by 213 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 213

Let's proceed to step 2:
213 can be fit into 80 0 times, resulting in a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Take the next digit (7) from the dividend and append it to 80, then repeat: 807 / 213

Let's proceed to step 3:
The number 213 fits into 807 3 times, leaving a remainder of 168.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 639 from 807 leaves us with 168.
Include the next digit (1) from the dividend after 168, then repeat: 1681 / 213

Step 4:
213 can be fit into 1681 7 times, resulting in a remainder of 190.
Use 7 as the next digit of our solution. 
Result so far: 37.0
Subtracting 1491 from 1681 leaves us with 190.
Take the next digit (8) from the dividend and append it to 190, then repeat: 1908 / 213

Advancing to step 5:
If we divide 1908 by 213, we get 8 and a remainder of 204.
The number 8 becomes the next digit in our result. 
Result so far: 378.0
Deduct 1704 from 1908 and we're left with 204.
Take the next digit (4) from the dividend and append it to 204, then repeat: 2044 / 213

Going ahead to step 6:
213 can be fit into 2044 9 times, resulting in a remainder of 127.
Use 9 as the next digit of our solution. 
Result so far: 3789.0
Subtract 1917 from 2044 to get 127.
Fetch the next digit (9) from the dividend, attach it to 127 and continue: 1279 / 213

Going ahead to step 7:
The number 213 fits into 1279 6 times, leaving a remainder of 1.
The next digit of our result is 6. 
Result so far: 37896.0
Subtract 1278 from 1279 to get 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 213

Moving on to step 8:
If we divide 14 by 213, we get 0 and a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 378960.0
Deduct 0 from 14 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 9:
213 goes into 140 0 times with a remainder of 140.
Use 0 as the next digit of our solution. 
Result so far: 378960.0
If we subtract 0 from 140, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 10:
When dividing 1400 by 213, we get 6 with a remainder of 122.
Record the quotient 6 as the next digit in the result. 
Result so far: 378960.06
Subtracting 1278 from 1400 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 11:
If we divide 1220 by 213, we get 5 and a remainder of 155.
The next digit of our result is 5. 
Result so far: 378960.065
Subtract 1065 from 1220 to get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Moving on to step 12:
213 can be fit into 1550 7 times, resulting in a remainder of 59.
The number 7 becomes the next digit in our result. 
Result so far: 378960.0657
Subtract 1491 from 1550 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 13:
590 divided by 213 is 2 with a remainder of 164.
Write down 2 as next digit of the result. 
Result so far: 378960.06572
If we subtract 426 from 590, we get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 14:
If we divide 1640 by 213, we get 7 and a remainder of 149.
Use 7 as the next digit of our solution. 
Result so far: 378960.065727
Deduct 1491 from 1640 and we're left with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Let's proceed to step 15:
When dividing 1490 by 213, we get 6 with a remainder of 212.
Write down 6 as next digit of the result. 
Result so far: 378960.0657276
Subtract 1278 from 1490 to get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Step 16:
When dividing 2120 by 213, we get 9 with a remainder of 203.
The number 9 becomes the next digit in our result. 
Result so far: 378960.06572769
Subtracting 1917 from 2120 leaves us with 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

The final result is 378960.06572769 with a remainder of 2.03e-07.