This might be a relevant calculation if the price rise will lead to increased production, allowing for just as much food to be produced as before (or maybe just

This might be a relevant calculation if the price rise will lead to increased production, allowing for just as much food to be produced as before (or maybe just slightly less), at an only slightly higher price. But it's not at all clear that that is the situation. It may turn out that there is no way to make up the shortage. If so, there will be a reduction in the amount of food produced. Depending on the magnitude of the reduction, you may die.