For numerical answers:

$(1)$ Keep at least $4$ decimal places for all calculations.

$(2)$ Round your final answers to $4$ decimal places. For example, if your answer is $-$$$1,234\mathrm{.}56789,$ please enter $-1234\mathrm{.}5679.$

$(3)$ Do not enter your answers in percentage. All answers are in decimal. For example, if your answer is $12\mathrm{.}34567\%,$ please enter $0\mathrm{.}1235.$