A wheel of a car lasts for 5000 scandinavian miles, and then it needs to be switched. The diameter of the car's wheel is 70 centimetres. How many laps has the wheel spinned before it needs to get changed? Answer with an exponent.
First off, I just want to say that 1 scandinavian mile = 10 kilometres = 10000 metres if anyone was wondering. I know that I need to divide the length that the wheel can drive with the perimeter of the wheel but I don't know how to do it with exponents.
My book says that the answer is 2.3*10^7 laps.
I'm sorry if I've written this a bit messy, my keyboard isn't functioning correctly.