Ku dhammee jumlada soo socota xulashada ugu fiican: Sida loo sameeyo laambad fudud.  Doorashooyinka Isticmaal weel caano ah oo 1 galaan ah oo ay ka buuxaan nalalka dabaysha si aad u sameysid laambad fudud oo casri ah. - Si fudud u dhig weel caano ah oo 1 galaan ah oo nadiif ah oo laga sameeyay caag khafiif ah dusha sare ee iftiinka hogaanka. Ama, waxaad ku xidhi kartaa laambad horteeda ku taagan nalka iftiinka weelka caanaha leh nalka weelka u jeeda.  Jawaab:
Ku dheji kaliya 1 galaan oo caano ah oo saafi ah oo laga sameeyay caag khafiif ah dusha sare ee iftiinka led. Ama, waxaad ku xidhi kartaa laambad horteeda ku taagan nalka iftiinka weelka caanaha leh nalka weelka u jeeda.