If two events a and b are independent and you know that p(a) = 0.30, what is the value of p(a | b)?

Easy points boii. read it. ya. fresh

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Can someone pls ! pls answer all. no explanation needed..