What is the answer to 4.0×10^7m in standard form

Just tell me how to set up the equation.

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. find the lateral area for the prism. l.a. = 0123456789

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.