Every year on Maundy Thursday, the reigning monarch gives “maundy money” to equal numbers of men and women.

In 1990, queen Elizabeth ll turned 64. On Maundy Thursday in 1990, she gave 64 men and 64 women 64p each.

Work out the total amount of money, in pence, that she gave away on this day, giving your answer in the form 2^a