My method for that is: - I need 200g - Bars are 160g - So I need 1 bar + 40g - 40g is 25% of 160g (this one's easy, but precision is rarely critical --

My method for that is: - I need 200g - Bars are 160g - So I need 1 bar + 40g - 40g is 25% of 160g (this one's easy, but precision is rarely critical -- and if you think it is, ask Siri) - So I need 1 bar + 1/4 bar