<human>:  Carl has four times as many marbles as Sean and Sean has half as many marbles as Cal. If Sean has 56 marbles, how many marbles do Carl and Cal have combined?
<bot>: How many marbles does Cal have? ** Cal has 56*2 = <<56*2=112>>112 marbles.
How many marbles does Carl have? ** Carl has 4*56 = <<4*56=224>>224 marbles.
How many marbles do Carl and Cal have combined? ** Carl and Cal have 112+224 = <<112+224=336>>336 marbles combined.
#### 336