10303128 ÷ 258 
We want to divide 10303128 by 258.

Step 1:
The number 258 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 258

On to step 2:
10 divided by 258 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 258

Advancing to step 3:
258 goes into 103 0 times with a remainder of 103.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 103 after subtracting 0 from 103.
Fetch the next digit (0) from the dividend, attach it to 103 and continue: 1030 / 258

Step 4:
If we divide 1030 by 258, we get 3 and a remainder of 256.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 774 from 1030, we get 256.
Bring next digit (3) of the dividend behind the 256 and repeat the process: 2563 / 258

On to step 5:
If we divide 2563 by 258, we get 9 and a remainder of 241.
Use 9 as the next digit of our solution. 
Result so far: 39.0
If we take 2322 away from 2563, we end up with 241.
Append the next digit (1) from the dividend to 241 and continue with: 2411 / 258

On to step 6:
258 can be fit into 2411 9 times, resulting in a remainder of 89.
Record the quotient 9 as the next digit in the result. 
Result so far: 399.0
Subtract 2322 from 2411 to get 89.
Bring next digit (2) of the dividend behind the 89 and repeat the process: 892 / 258

Going ahead to step 7:
258 can be fit into 892 3 times, resulting in a remainder of 118.
Put 3 as the next digit of the answer. 
Result so far: 3993.0
Deduct 774 from 892 and we're left with 118.
Include the next digit (8) from the dividend after 118, then repeat: 1188 / 258

Step 8:
The number 258 fits into 1188 4 times, leaving a remainder of 156.
The next digit of our result is 4. 
Result so far: 39934.0
If we subtract 1032 from 1188, we get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Going ahead to step 9:
If we divide 1560 by 258, we get 6 and a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 39934.6
The remainder is 12 after subtracting 1548 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 10:
258 can be fit into 120 0 times, resulting in a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 39934.6
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 11:
258 can be fit into 1200 4 times, resulting in a remainder of 168.
Put 4 as the next digit of the answer. 
Result so far: 39934.604
Subtract 1032 from 1200 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Let's proceed to step 12:
When dividing 1680 by 258, we get 6 with a remainder of 132.
The number 6 becomes the next digit in our result. 
Result so far: 39934.6046
Subtract 1548 from 1680 to get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Let's proceed to step 13:
If we divide 1320 by 258, we get 5 and a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 39934.60465
If we subtract 1290 from 1320, we 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.

Step 14:
300 divided by 258 is 1 with a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 39934.604651
Deduct 258 from 300 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 15:
If we divide 420 by 258, we get 1 and a remainder of 162.
Record the quotient 1 as the next digit in the result. 
Result so far: 39934.6046511
Deduct 258 from 420 and we're left with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

The final outcome is 39934.6046511, with a leftover of 1.62e-06.