I am going to give points, and mark as brainliest if anyone solves this, this is very much complicated. Trust Me.

Answer:
30
Step-by-step explanation:
[tex]15\times10\div5[/tex]
Calculate
[tex]\frac{15\times10}{5}[/tex]
Cross out the common factor
[tex]3\times10[/tex]
Calculate the product or quotient
[tex]30[/tex]
I hope this helps you
:)