Julio has 4 * 2 = <<4*2=8>>8 liters of orange soda
Julio also has 7 * 2 = <<7*2=14>>14 liters of grape soda.
Julio therefore has a total of 8 + 14 = <<8+14=22>>22 liters of soda
The amount of orange soda that Mateo has is 1 * 2 = <<1*2=2>>2 liters of orange soda
In addition, Mateo has 3 * 2 = <<3*2=6>>6 liters of grape soda.
In total, Mateo has 2 + 6 = <<2+6=8>>8 liters of soda.
This means that Julio has 22 - 8 = <<22-8=14>>14 liters more of soda
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