50102568 ÷ 398 
We want to figure out the number of times 50102568 can be divided by 398.

On to step 1:
5 divided by 398 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 398

Going ahead to step 2:
The number 398 fits into 50 0 times, leaving a remainder of 50.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 50 to get 50.
Include the next digit (1) from the dividend after 50, then repeat: 501 / 398

Let's proceed to step 3:
398 can be fit into 501 1 times, resulting in a remainder of 103.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 398 from 501 and we're left with 103.
Bring next digit (0) of the dividend behind the 103 and repeat the process: 1030 / 398

On to step 4:
If we divide 1030 by 398, we get 2 and a remainder of 234.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 796 from 1030 leaves us with 234.
Grab the next digit (2) from the dividend, add it to 234, then carry on: 2342 / 398

On to step 5:
2342 divided by 398 is 5 with a remainder of 352.
The next digit of our result is 5. 
Result so far: 125.0
Deduct 1990 from 2342 and we're left with 352.
Include the next digit (5) from the dividend after 352, then repeat: 3525 / 398

Advancing to step 6:
The number 398 fits into 3525 8 times, leaving a remainder of 341.
Write down 8 as next digit of the result. 
Result so far: 1258.0
The remainder is 341 after subtracting 3184 from 3525.
Fetch the next digit (6) from the dividend, attach it to 341 and continue: 3416 / 398

Moving on to step 7:
3416 divided by 398 is 8 with a remainder of 232.
Put 8 as the next digit of the answer. 
Result so far: 12588.0
Subtract 3184 from 3416 to get 232.
Grab the next digit (8) from the dividend, add it to 232, then carry on: 2328 / 398

Going ahead to step 8:
398 goes into 2328 5 times with a remainder of 338.
Use 5 as the next digit of our solution. 
Result so far: 125885.0
Deduct 1990 from 2328 and we're left with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

On to step 9:
When dividing 3380 by 398, we get 8 with a remainder of 196.
The number 8 becomes the next digit in our result. 
Result so far: 125885.8
If we take 3184 away from 3380, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Step 10:
1960 divided by 398 is 4 with a remainder of 368.
Record the quotient 4 as the next digit in the result. 
Result so far: 125885.84
Deduct 1592 from 1960 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Moving on to step 11:
If we divide 3680 by 398, we get 9 and a remainder of 98.
The number 9 becomes the next digit in our result. 
Result so far: 125885.849
Deduct 3582 from 3680 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.

Let's proceed to step 12:
The number 398 fits into 980 2 times, leaving a remainder of 184.
Write down 2 as next digit of the result. 
Result so far: 125885.8492
Subtract 796 from 980 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 13:
398 goes into 1840 4 times with a remainder of 248.
Record the quotient 4 as the next digit in the result. 
Result so far: 125885.84924
Subtracting 1592 from 1840 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 14:
If we divide 2480 by 398, we get 6 and a remainder of 92.
Put 6 as the next digit of the answer. 
Result so far: 125885.849246
If we take 2388 away from 2480, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 15:
When dividing 920 by 398, we get 2 with a remainder of 124.
Use 2 as the next digit of our solution. 
Result so far: 125885.8492462
If we take 796 away from 920, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

On to step 16:
The number 398 fits into 1240 3 times, leaving a remainder of 46.
Put 3 as the next digit of the answer. 
Result so far: 125885.84924623
Subtract 1194 from 1240 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final outcome is 125885.84924623, with a leftover of 4.6e-08.