71123852 divided by 249 
The aim is to understand the frequency of 249 in 71123852.

Going ahead to step 1:
When dividing 7 by 249, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 249

Moving on to step 2:
If we divide 71 by 249, we get 0 and a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Append the next digit (1) from the dividend to 71 and continue with: 711 / 249

Advancing to step 3:
The number 249 fits into 711 2 times, leaving a remainder of 213.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 498 from 711 leaves us with 213.
Bring next digit (2) of the dividend behind the 213 and repeat the process: 2132 / 249

Step 4:
When dividing 2132 by 249, we get 8 with a remainder of 140.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtracting 1992 from 2132 leaves us with 140.
Bring next digit (3) of the dividend behind the 140 and repeat the process: 1403 / 249

Let's proceed to step 5:
The number 249 fits into 1403 5 times, leaving a remainder of 158.
The next digit of our result is 5. 
Result so far: 285.0
Deduct 1245 from 1403 and we're left with 158.
Fetch the next digit (8) from the dividend, attach it to 158 and continue: 1588 / 249

Let's proceed to step 6:
The number 249 fits into 1588 6 times, leaving a remainder of 94.
Put 6 as the next digit of the answer. 
Result so far: 2856.0
Subtract 1494 from 1588 to get 94.
Grab the next digit (5) from the dividend, add it to 94, then carry on: 945 / 249

Moving on to step 7:
249 goes into 945 3 times with a remainder of 198.
Use 3 as the next digit of our solution. 
Result so far: 28563.0
The remainder is 198 after subtracting 747 from 945.
Take the next digit (2) from the dividend and append it to 198, then repeat: 1982 / 249

Step 8:
1982 divided by 249 is 7 with a remainder of 239.
Record the quotient 7 as the next digit in the result. 
Result so far: 285637.0
Subtract 1743 from 1982 to get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Let's proceed to step 9:
249 goes into 2390 9 times with a remainder of 149.
The number 9 becomes the next digit in our result. 
Result so far: 285637.9
Subtract 2241 from 2390 to get 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 10:
If we divide 1490 by 249, we get 5 and a remainder of 245.
Put 5 as the next digit of the answer. 
Result so far: 285637.95
Subtracting 1245 from 1490 leaves us with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Step 11:
The number 249 fits into 2450 9 times, leaving a remainder of 209.
Write down 9 as next digit of the result. 
Result so far: 285637.959
Deduct 2241 from 2450 and we're left with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Let's proceed to step 12:
The number 249 fits into 2090 8 times, leaving a remainder of 98.
The number 8 becomes the next digit in our result. 
Result so far: 285637.9598
Deduct 1992 from 2090 and we're left with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Moving on to step 13:
980 divided by 249 is 3 with a remainder of 233.
Write down 3 as next digit of the result. 
Result so far: 285637.95983
If we take 747 away from 980, we end up with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

On to step 14:
249 can be fit into 2330 9 times, resulting in a remainder of 89.
Use 9 as the next digit of our solution. 
Result so far: 285637.959839
If we take 2241 away from 2330, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 15:
When dividing 890 by 249, we get 3 with a remainder of 143.
Put 3 as the next digit of the answer. 
Result so far: 285637.9598393
The remainder is 143 after subtracting 747 from 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

On to step 16:
If we divide 1430 by 249, we get 5 and a remainder of 185.
The number 5 becomes the next digit in our result. 
Result so far: 285637.95983935
Subtract 1245 from 1430 to get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

The final outcome is 285637.95983935, with a leftover of 1.85e-07.