1 gram = 1000000 micro gram 50 kilogram = 50 x 1000 x 1000000 = 50000000000 micro grams
10
50000000000
50000000000 is 50000 million (or 50 billion).
500
1000000
50000000000000 + 50000000000 = 50050000000000
50000000000
50000000000
=50000000000 + 200000 + 30000 = 50000230000
about 50000000000 a day
50000000000 kalvin