To convert lbs to kilogrammes divide by 2.204622. I've generated some hopefully helpful examples randomly below, as with most random sentences please excuse the repetitive and occasionally comic outcomes.
How many kilogrammes of lentils are there in 520 lbs? Just divide by 2.204622 to get the answer of 235.8681 kilogrammes.
You've got 380 lbs of flour but someone only wants to buy that in units of kilogrammes, to change the units divide by 2.204622. Now you have 172.3651 kilogrammes.
To convert 550 lbs into kilogrammes divide by 2.204622 giving 249.4759 kilogrammes.
You have 220 lbs of butter but you need to know how many kilogrammes that is. To get the answer divide by 2.204622 which gives you 99.79035 kilogrammes.