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Calculator 18 Using the Calculator Tap numbers and functions in Calculator just as you would with a standard calculator. When you tap the add, subtract, multiply, or divide button, a white ring appears around the button to let you know the operation to be carried out. Rotate iPhone to get an expanded scientific calculator. Standard Memory Functions • C: Tap to clear the displayed number. • MC: Tap to clear the memory. • M+: Tap to add the displayed number to the number in memory. If no number is in memory, tap to store the displayed number in memory. • M-: Tap to subtract the displayed number from the number in memory. • MR: Tap to replace the displayed number with the number in memory. If the button has a white ring around it, there is a number stored in memory. The stored number remains in memory when you switch between the standard and scientific calculators. 135