Ineed major .
(23.5 • 2.3)
(4.321 • 12.34)
explain with work shown completely

Just multiply 23.5 with 2.3 
and in the second one multiply 4.321 with 12.34

(23.5 x 2.3)
(4.321 x 12.34)
Now, do the first step in the order of operations, simplify the contents of the  parentheses:
Answer to 1st Problem - 54.05     
Answer to 2nd Problem - 53.32114
Hope this helps!