wavelength = 3.00*10^8 m/s
------------------- that is division.
5.3* 10^2 Hz
3∗108m/s5.3∗102Hz=3∗106m/s5.3oscillations/sec≈566038moscillations wavelength=566038mto the nearest metre
i got 566.038
You answer is not right becasue 3/5.3 = 0.5660377...
10^8 / 10^2 = 10^6
0.5660377 * 10^6 = 566037.7
+1443 
