'Toils' in the Bible

What does a person gain in all his toil with which he toils under the sun?

For what does a person receive for all his toil and in the longing of his heart with which he toils under the sun?

Look! I have discovered what is good and fitting: to eat and to drink and {to enjoy} all [the fruit of] the toil with which one toils under the sun during the number of the days of his life that God gives to him--for this [is] his lot.