"three millions" is correct and usable in written English.
It can be used when referring to a large number, such as: "The project is estimated to cost three millions dollars."
Students were divided into three groups (1st-3rd, 4th-6th and 7th-9th) by grade.
His first bogey came at the par three 14th.
Tea Party Republicans have called for a direct challenge to not one (14th), not two (16th), but three (17th) Constitutional amendments.
Suspended from the ceiling are three 19th-century chandeliers.
(According to the National Institutes of Health, one in three 12th graders have vaped in the past year).
Behind the BCM-HGSC team were Meraculous and Symbiose (four 1st place rankings each), and the Ray team (three 1st place rankings).
For host herbivore damage treatments, a total of three 4th instar and three 2nd instar P. xylostella larvae were placed in each pot of B. oleracea.
For example, according to a previous simulation, the chance of sharing any region IBD on the autosomes is 1.6% for two 10th cousins and is 0.5% for three 6th cousins [Yang et al., 2008].
The three ranked 2nd, 16th and 22nd in the league.
We considered the three quartiles (25th, 50th and 75th percentile) of IES and HADS.
Two 50th birthdays will be acknowledged.
