運算式 13: left parenthesis, negative 1 , 1.1 , right parenthesis−1,1.1
13
運算式 14: left parenthesis, "c" , 0 , right parenthesisc,0
14
運算式 15: "a" Subscript, "r" , Baseline equals StartFraction, floor left parenthesis, "a" times 1000 , right parenthesis Over 1000 , EndFractionar=floora·10001000