If he melts them down, five quarters equals $100 because 1 / (1/5) = <<5=5>>5
If he spends those five quarters they are worth $1.25 because 5 x .25 = <<5*.25=1.25>>1.25
They are worth 80 times more melted down because 100 / 1.25 = <<100/1.25=80>>80
#### 80