50000000 - 45573216 = 4426784
45 billion
45:191
100 000 x 459.00 = 45 900 000
145,500
45%
i make 45 ,000
450 km
45,045,000
455,000,000,000 = 4.55 x 101145.5000 000 000 = 4.55 x 101
Brussels capital region has 160km² greenspace occupy 80km² but more than 40% of this green space is private (gardens, royal domaine) => 45 km² of pulic greenspace for 1 million inhabitants => 45 000 000 m²/ 1 000 000 answer is 45m² per inhabitant... not so bad :)
45 000 x 27 =1 215 000
The world's oceans collectively contain about 45 500 000 000 000 000 tonnes of salt. Even more salt exists in salt lakes, in mineralized sea salt deposits, in porous rocks, and in frozen sea ice.