[tex]\text {1 package of papers = 500 sheets}[/tex]
[tex]1 \dfrac{3}{4} \text { package of papers = } 500 \times 1 \dfrac{3}{4} [/tex]
[tex]1 \dfrac{3}{4} \text { package of papers = } 500 \times \dfrac{7}{4} [/tex]
[tex]1 \dfrac{3}{4} \text { package of papers = } 875 \text { sheets}[/tex]