唔係好明,,請教教我,,唔該[[ 急問 ]]

我係Ｆ１既,,有一條數唔係好明點計,,請幫幫我教教我

questions::
The H.C.F and L.C.M of two numbers are 6 and 108 respectively.If the two numbers are 12 and y,,find y.((hint:: y is multiple of 6 and factor of 108.))