Porque nesta divisão ela é trocada por multiplicação ela está entre aspas, por favor me ajudem tenho uma prova amanha esta é minha unica duvida sobre a prova procurei na internet e não achei nada
me ajude por favor
[-(1/2 - 3/2 x 7/3) - 9° + (3/4 + 19/2 / 2/3)] x 10³

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)