For any equation, we have to follow PEMDAS (Parenthesis, Exponents, Multiply/Divide from left to right, Add/Subtract from left to right).
We have the equation 12*14+45/6. We'll first do multiplication.
12*14=168
168+45/6
Then we do division:
45/6=7.5
Finally, we do addition
168+7.5=175.5
:)