1. The problem involves operations with the number 858 and 33, specifically addition, division, multiplication, and division by 2. 2. First, calculate $858 + 33$: $$858 + 33 = 891$$ 3. Next, calculate $858 \div 33$: $$858 \div 33 = 26$$ 4. Then, calculate $858 \times 33$: $$858 \times 33 = 28314$$ 5. Finally, calculate $858 \div 2$: $$858 \div 2 = 429$$ 6. Since the question is about dividing 858 trees among 33 rows, the correct expression representing the problem is division: $$858 \div 33 = 26$$ This means each row has 26 trees.