<human>:  Ali had $21. Leila gave him half of her $100. How much does Ali have now?
<bot>: How much did Leila give to Ali? ** Leila gave 100/2 = $<<100/2=50>>50 to Ali.
How much does Ali have now? ** Ali now has $21+ $50 = $<<21+50=71>>71.
#### 71