I don't think that's quite right

one thousand thousand (1,000 * 1,000) == one million (1,000,000)

one thousand million (1,000 * 1,000,000) == one billion (1,000,000,000)

one thousand billion (1,000 * 1,000,000,000) == one trillion (1,000,000,000,000)

Basically "one thousand ____" means "add 3 zeros"

one million million (1e6 * 1e6) == one trillion (1e12)

one million billion (1e6 * 1e9) == one quadrillion (1e15)

Basically "one million ____" means "add 6 zeros"