How to write an essay about no leftovers

As soon as I got home from school at noon today, the fragrant rice on the table made my already growling stomach even more joyful. Without saying anything, I picked up the bowl and ate, thinking: I am really starving to death.

After a while, the delicious lunch was over, and I accidentally discovered that the rice in the rice cooker had just been finished. I couldn't help but ask doubtfully: "Mom, why do you cook neither too much nor too little rice, just enough to finish it, and no leftover rice? Do you have to count the number of rice grains every time you cook?"

My mother laughed and said: "Silly boy, there are so many rice grains, how can you count them! Look, our family has a measuring cup, and each person's meal is about a full cup (160ml) of rice. So, our family There are 5 people, so we put 5 full cups of rice in the pot, so we can finish it every time!

Oh, that’s it! Then I thought: Then we have to eat it every meal! How many grains of rice are there? So I took out my mother’s measuring cup and poured it on the table. It was quite a lot! There were about 580 grains of rice in 10ml, so one person would eat 160ml per meal! There are about 580×16=9280 grains of rice; 5 people eat 9280×5=46400 grains of rice in one meal.

If our family of five eats three meals of rice a day, it will be enough. It can eat about 46400×3=139200 grains of rice, about 3139200×365=50808000 grains of rice in one year, and about 50808000×2=101616000≈100 million grains of rice in two years.

Wow! One hundred million grains of rice is so much that our family of five can eat it for two years! I really want to tell my classmates this discovery quickly, even if we have 100 million, 200 million... no matter how much rice we have. Always remember: Although a grain of rice is small, it is not easy, so don’t take your hard work as a joke