Let's consider the question this way:
There are twelve zeros in 100 million million. 100,000,000,000,000
Six zeros... 376,000,000
37 million (37,000,000) has six zeros.
20 zeros
There are 5 zeros.
There are twelve zeros in 100 million million. 100,000,000,000,000
There are fourteen zeros in 100 million million.
There are 5 zeros in 16.5 million.
There are SIX zeros in a million !
Six zeros... 376,000,000
Million have 6 zeros. So for 1.5 million 5 zeros. 1,500,000
1 million (1,000,000) has 6 zeros 50 million (50,000,000) has 7 zeros
there are 6 zeros in 3 million. 3,000,000
13 zeros.
There are 5 zeros in 5.1 million.
5 zeros (1.2 million = 1,200,000)
180 million has 7 zeros.