How many Planets are there in milky-way?

Hint :A planet is a large object as Jupiter such as or Earth that orbits a star. Planets are smaller than stars, and they do not produce light. Planets are shaped like a slightly squashed ball (called a spheroid). Objects that orbit planets are called satellites.

Complete Step By Step Answer:
The Milky Way contains at least 100 billion planets. And scientists are hell-bent on finding which ones might harbor life. Our galactic neighborhood may be bustling with other worlds, but a new study estimates that a mere 300 million of those 100 billion planets may have the right ingredients for life.
The study found that there could be 300 million habitable planets in the Milky Way. Some are just 30 light years from the Sun. Scientists have confirmed the existence of more than 4,000 exoplanets, although 3,000 more suspected exoplanets are awaiting confirmation. Some of these planets have shown signs of potential habitability, but whether they do host life will be extremely difficult to determine.
The Milky Way is a barred spiral galaxy with an estimated visible diameter of 150-200,000 light-years, an increase from traditional estimates of 100,000 light-years. Recent simulations suggest that a dark matter disk, also containing some visible stars, may extend up to a diameter of almost 2 million light-years.

Note :
The Milky Way has several satellite galaxies and is part of the local group of galaxies, which form part of the Virgo Supercluster, which is itself a component of the Laniakea Supercluster. The Milky Way is visible from Earth as a hazy band of white light, some 30° wide, arching the night sky .