[tex]84\times7[/tex]
Let's complete the boxes.
We split 84 into 80 + 4.
[tex]84\times7=(80+4)\times7[/tex]
We multiplied 7 to the numbers inside the parenthesis.
[tex]84\times7=80\times7+4\times7[/tex]
Following EPMDAS, we do the multiplication part first.
[tex]84\times7=560+28[/tex]
Then, add.
[tex]84\times7=588[/tex]
