I selected 3 but 300 works too.
From Wikipedia
Mixed division and multiplication
In some of the academic literature, multiplication denoted by juxtaposition (also known as implied multiplication) is interpreted as having higher precedence than division, so that 1 2n equals 1 (2n), not (1 2)n.[1] For example, the manuscript submission instructions for the Physical Review journals state that multiplication is of higher precedence than division,[22] and this is also the convention observed in prominent physics textbooks such as the Course of Theoretical Physics by Landau and Lifshitz and the Feynman Lectures on Physics.[d]
This ambiguity is often exploited in internet memes such as "82(2+2)", for which there are two conflicting interpretations: 8[2(2+2)] = 1 and [82](2+2) = 16.[23] The equation "62(1+2)" also gained notoriety in the exact same manner, with the two interpretations resulting in the answers 1 and 9.[