please help,Anyone!!

First let's do a dimensional analysis to make sure you have the correct numbers

  Lambda =  m^2 kg /s   / ( kg-m /s)     results in an answer     m^2-kg/s  x  s/kg-m  =  m   so your answer will be in meters

Then just do the math with your numbers

= .006616766 x 10 ^(-34 +27)  = .0066167 x 10^-7   m  =  6.6167 x 10^(-10)  m

λ =           [ 6.63x10^-34 m^2 kg/s ] / [(1.67x10^-27kg)(600 m/s)] =

[6.63] / 1.67 * 600] * [10^-34] / [10^-27] m  =

 ( [ 0.0066167664670659] * 10^27 / 10^34) m  =

[ 0.0066167664670659] * 10^-7   m 

 6.6167664670659 * 10^-10   m