I think 4.285714285714286*10^4
step one is you have to turn w.e. number you have into a number between 1 and 10, so in this case 4.285714285714286
and then you have to count how many times you moved the decimal place over, so in this case 4 times so you put 4 as the power to the base of 10
so 42,857.14285714286 as a scientific notation is 4.285714285714286*10^4
