B: Why do we need to save money?

A: Because we need to buy a house.

B: But a house is so expensive.

A: That’s why we need to save money.

B: How much do we need to save?

A: We need to save enough for a down payment.

B: How much is that?

A: That’s about $30,000.

B: Thirty thousand dollars! That will take forever.

A: Not if we save every penny.

B: Okay. Here’s seven pennies.