On Saturday, I went to my grandmother's house to play. Many vegetables are planted in her field, including cabbage, cucumber and water spinach.

One day, I found a frog. According to grandma, frog is an excellent insect catcher and our good friend. I don't understand: how many pests can a frog eat in a week? How many pests can you eat in two weeks? I asked my grandmother, and she said, "The frog can eat 367 pests a week and 448 pests in two weeks. How many pests did the frog eat?"

I said, "It's not difficult for me. As long as I add up the food I have eaten for two weeks, I can figure out that 367+448=8 15 (only), so the problem is solved. " Grandma praised me for being so smart.

I think: I must learn math well and use it to solve various problems.

(student: xxx)