Kazu thinks of $2436\div4$ as an area problem: >  He splits the rectangle into parts that are easily divisible by $4$: >  **Fill in the blanks.** $\purple{a}=$ [[☃ input-number 1]] units $\blue{b}=$ [[☃ input-number 2]] units $\green{c}=$ [[☃ input-number 3]] units $w = $ [[☃ input-number 4]] units $2436 \div 4 =$ [[☃ input-number 5]]