14*10000+12000 = 152000
To write 400 thousand in numbers, you would write 400,000. This is a standard way to represent large numbers using commas to separate the thousands, millions, billions, etc. In this case, 400 is followed by three zeros to indicate the thousands place.
.0613
4,490
Ah, isn't that a happy number to work with? To write 21 million in numbers, you simply write 21 followed by six zeros: 21,000,000. Just think of all the happy little zeros dancing around that 21, creating a beautiful number on your canvas of mathematics.
4589
It is 410,000
7.0015
915,000
90.16
129,000
14*10000+12000 = 152000
21,000 (grand in this sense means 'thousands')
279,800
640 thousands = 640,000
20,600
13,270