Extrac Part of a cell array

I have a cell array like a = {'danny_820','richard_320','Tom_500','Fred_120'}. Please how do i extract the numbers so that i will be left with

{820,320,500,120}

Thanks

Answer 1

[Stephen23]

>> a = {'danny_820','richard_320','Tom_500','Fred_120'};
>> str2double(regexp(a,'\d+$','once','match'))
ans =
   820   320   500   120