758458 divided by 40 
We're looking to find how many times 40 goes into 758458.

On to step 1:
7 divided by 40 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 40

Moving on to step 2:
The number 40 fits into 75 1 times, leaving a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 40 from 75 and we're left with 35.
Grab the next digit (8) from the dividend, add it to 35, then carry on: 358 / 40

Going ahead to step 3:
If we divide 358 by 40, we get 8 and a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
Subtracting 320 from 358 leaves us with 38.
Fetch the next digit (4) from the dividend, attach it to 38 and continue: 384 / 40

On to step 4:
40 goes into 384 9 times with a remainder of 24.
Write down 9 as next digit of the result. 
Result so far: 189.0
Deduct 360 from 384 and we're left with 24.
Grab the next digit (5) from the dividend, add it to 24, then carry on: 245 / 40

On to step 5:
245 divided by 40 is 6 with a remainder of 5.
The next digit of our result is 6. 
Result so far: 1896.0
Deduct 240 from 245 and we're left with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 40

Let's proceed to step 6:
40 goes into 58 1 times with a remainder of 18.
The next digit of our result is 1. 
Result so far: 18961.0
The remainder is 18 after subtracting 40 from 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 7:
180 divided by 40 is 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 18961.4
If we take 160 away from 180, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
When dividing 200 by 40, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 18961.45
If we subtract 200 from 200, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
The number 40 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 18961.45
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
40 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 18961.45
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 18961.45 with a remaining 0.0.