John buys 20 bars of soap each weighing 1.5 pounds for $.5 per pound.  How much money did he spend on soap? Let's think step by step and output the final answer after "####".
user
He bought 20*1.5=<<20*1.5=30>>30 pounds of soap
That cost 30*.5=$<<30*.5=15>>15
#### 15
John buys 20 bars of soap each weighing 1.5 pounds for $.5 per pound.  How much money did he spend on soap?
train