We're dividing 99345457 by 249 
We want to figure out the number of times 99345457 can be divided by 249.

Advancing to step 1:
The number 249 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 249

Step 2:
If we divide 99 by 249, we get 0 and a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Fetch the next digit (3) from the dividend, attach it to 99 and continue: 993 / 249

Let's proceed to step 3:
When dividing 993 by 249, we get 3 with a remainder of 246.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 747 from 993, we get 246.
Fetch the next digit (4) from the dividend, attach it to 246 and continue: 2464 / 249

Step 4:
If we divide 2464 by 249, we get 9 and a remainder of 223.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
Subtracting 2241 from 2464 leaves us with 223.
Grab the next digit (5) from the dividend, add it to 223, then carry on: 2235 / 249

Let's proceed to step 5:
2235 divided by 249 is 8 with a remainder of 243.
Use 8 as the next digit of our solution. 
Result so far: 398.0
If we subtract 1992 from 2235, we get 243.
Bring next digit (4) of the dividend behind the 243 and repeat the process: 2434 / 249

Going ahead to step 6:
The number 249 fits into 2434 9 times, leaving a remainder of 193.
Record the quotient 9 as the next digit in the result. 
Result so far: 3989.0
If we take 2241 away from 2434, we end up with 193.
Grab the next digit (5) from the dividend, add it to 193, then carry on: 1935 / 249

Moving on to step 7:
249 can be fit into 1935 7 times, resulting in a remainder of 192.
The next digit of our result is 7. 
Result so far: 39897.0
The remainder is 192 after subtracting 1743 from 1935.
Fetch the next digit (7) from the dividend, attach it to 192 and continue: 1927 / 249

On to step 8:
When dividing 1927 by 249, we get 7 with a remainder of 184.
The number 7 becomes the next digit in our result. 
Result so far: 398977.0
Subtract 1743 from 1927 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Going ahead to step 9:
When dividing 1840 by 249, we get 7 with a remainder of 97.
Use 7 as the next digit of our solution. 
Result so far: 398977.7
If we subtract 1743 from 1840, we get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Going ahead to step 10:
When dividing 970 by 249, we get 3 with a remainder of 223.
Write down 3 as next digit of the result. 
Result so far: 398977.73
The remainder is 223 after subtracting 747 from 970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Moving on to step 11:
When dividing 2230 by 249, we get 8 with a remainder of 238.
The next digit of our result is 8. 
Result so far: 398977.738
Subtracting 1992 from 2230 leaves us with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 12:
2380 divided by 249 is 9 with a remainder of 139.
Put 9 as the next digit of the answer. 
Result so far: 398977.7389
If we subtract 2241 from 2380, we get 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Step 13:
If we divide 1390 by 249, we get 5 and a remainder of 145.
The number 5 becomes the next digit in our result. 
Result so far: 398977.73895
If we take 1245 away from 1390, we end up with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Let's proceed to step 14:
1450 divided by 249 is 5 with a remainder of 205.
Write down 5 as next digit of the result. 
Result so far: 398977.738955
If we subtract 1245 from 1450, we get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

The final outcome is 398977.738955, with a leftover of 2.05e-05.