To solve the equation \( 6 \times p = 78 \), we can isolate \( p \) by dividing both sides of the equation by 6:
\[ p = \frac{78}{6} \]
Now, let's calculate \( \frac{78}{6} \):
\[ \frac{78}{6} = 13 \]
Thus, the correct expression for \( p \) is:
\[ p = 78 \div 6 \]
Among the responses provided, the correct one is:
p = 78 ÷ 6