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Nicely done Adam from Poltair Community School and Sports College, Cornwall!
A big thank you too to Michael for your elegant method of finding the sum of all 3 digit numbers each of whose digits is odd:
I think the answer is $69 375$.What do the digits in the number fifteen add up to? How many other numbers have digits with the same total but no zeros?
In the multiplication calculation, some of the digits have been replaced by letters and others by asterisks. Can you reconstruct the original multiplication?