Please help me!! I don’t underatsnd

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

286 divided by 457.6 what is the quotient?