<human>:  A single kabob stick has 4 cubes of beef. A slab of beef that costs $25 can be cut into 80 cubes. How much must Simon spend to make 40 kabob sticks?
<bot>: How many kabob sticks can one slab of beef make? ** One slab of beef can make 80/4 = <<80/4=20>>20 kabob sticks.
How many slabs of beef does Simon need? ** To make 40 kabob sticks, Simon needs 40/20 = <<40/20=2>>2 slabs of beef.
How much does Simon need to spend? ** Simon must spend $25 x 2 = $<<25*2=50>>50
#### 50