Human: Darwin has 600$. He spent 1/3 of it on gas for his car, and 1/4 of what was left on food. How much money did he have left? Assistant: 
How much did Darwin spend on gas? ** 600/3=<<600/3=200>>200$ for gas
How much did Darwin have left after buying gas? ** After buying gas, Darwin has 600-200=<<600-200=400>>400$ left
How much did Darwin spend on food? ** 400/4=<<400/4=100>>100$ on food
How much did Darwin have left? ** Darwin has 400-100=<<400-100=300>>300$ left
#### 300