Seven hundred fifty thousand. It is usually easier to see the value of the number when it is separated into groups of three. In the US, it is done with the comma: 750,000 and in other places it is done with the period: 750.000. It is sometimes seen like this, 750 000 with spaces between groups.
Three hundred ten thousand.
750000 in words = seven hundred and fifty thousand.
"Longhand" is a term to describe writing made using a pen to write on paper.
Sixty-one thousand, seven hundred forty-four dollars and ninety cents.
1,000,000,000,000 becquerels
To write the old fashioned way, on paper. and to write words out.
750,000
I think it is 7.5e5
$750000
4000
7.5 x 105
two thousand and eight