We're dividing 40096511 by 258 
Let's see how many times 258 fits into 40096511.

Advancing to step 1:
258 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 258

Let's proceed to step 2:
If we divide 40 by 258, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Grab the next digit (0) from the dividend, add it to 40, then carry on: 400 / 258

On to step 3:
258 goes into 400 1 times with a remainder of 142.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 258 from 400 to get 142.
Fetch the next digit (9) from the dividend, attach it to 142 and continue: 1429 / 258

Moving on to step 4:
258 goes into 1429 5 times with a remainder of 139.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 1290 from 1429 and we're left with 139.
Append the next digit (6) from the dividend to 139 and continue with: 1396 / 258

Let's proceed to step 5:
1396 divided by 258 is 5 with a remainder of 106.
Use 5 as the next digit of our solution. 
Result so far: 155.0
If we take 1290 away from 1396, we end up with 106.
Bring next digit (5) of the dividend behind the 106 and repeat the process: 1065 / 258

On to step 6:
The number 258 fits into 1065 4 times, leaving a remainder of 33.
Use 4 as the next digit of our solution. 
Result so far: 1554.0
The remainder is 33 after subtracting 1032 from 1065.
Grab the next digit (1) from the dividend, add it to 33, then carry on: 331 / 258

Step 7:
When dividing 331 by 258, we get 1 with a remainder of 73.
Use 1 as the next digit of our solution. 
Result so far: 15541.0
Subtract 258 from 331 to get 73.
Bring next digit (1) of the dividend behind the 73 and repeat the process: 731 / 258

Let's proceed to step 8:
If we divide 731 by 258, we get 2 and a remainder of 215.
Record the quotient 2 as the next digit in the result. 
Result so far: 155412.0
The remainder is 215 after subtracting 516 from 731.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Going ahead to step 9:
The number 258 fits into 2150 8 times, leaving a remainder of 86.
The number 8 becomes the next digit in our result. 
Result so far: 155412.8
If we subtract 2064 from 2150, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Moving on to step 10:
258 can be fit into 860 3 times, resulting in a remainder of 86.
The number 3 becomes the next digit in our result. 
Result so far: 155412.83
If we take 774 away from 860, we end up with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 11:
258 can be fit into 860 3 times, resulting in a remainder of 86.
Write down 3 as next digit of the result. 
Result so far: 155412.833
The remainder is 86 after subtracting 774 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

The final outcome is 155412.833, with a leftover of 0.0086.