1 AUD= 0.931 NZD. HOW MUCH IS 788 NZD?
You can set up a proportion: AUD / NZD = AUD / NZD
1 AUD / 0.931 NZD = x AUD / 788 NZD
Cross multiply: 1 · 788 = 0.931 · x
x = 846 AUD