(20*3)+13

To calculate \( (20 \times 3) + 13 \):

First, multiply \( 20 \) by \( 3 \):

\[ 20 \times 3 = 60 \]

Then, add \( 13 \):

\[ 60 + 13 = 73 \]

So, \( (20 \times 3) + 13 = 73 \).