Lightning bolt electrons problem

wyclefchick
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A strong lightning bolt transfers about 25 C to Earth. How many electrons are transferred?

1 electrons = 1.60E-19

so.. 25 / 1.60 E -19 = 1.5625E-18 electrons

but the answer that my teacher gave us is 1.6 E 20 electrons

what did i do wrong?
 
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Caclculator error. Watch how you enter E-19.
 
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