Julian’s brother is performing some calculations on his calculator. julian sees that the result in the display is 4.13e7. how can this number be expressed in standard notation?

Can somebody me out with this question

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?

Find the value of x. give reasons to justify your solutions! h ∈ ig