so all you have to do is divide every thing by 6 and then add two of the answer together I'll show you.
450÷6=75 now add 75+75=150 now do 450- 150= 300 you need 300g of cream cheese.
90÷6=15 now add 15+15=30 now do 90- 30=60 you need 60g of butter
120÷6=20 now add 20+20=40 now do 120- 40=80 you need 80g of castor oil
6÷6=1 now add 1+1=2 now do 6- 2=4 you need 4 eggs
I hope that was fast enough