There are 0.075×NA titanium atoms , where NA=Avogadro's number =6.02243×1023
Explanation:
If I were to ask you how many eggs are in a half dozen, I think you would immediately answer "6". In effect, you have asked the same thing.
In one mole of stuff (atoms, molecules, eggses), there are 6.02243×1023 individual items of that stuff. 6.02243×1023 individual 1H atoms have a mass of 1g precisely. This is why we use the number. if I measure out a gram or so of stuff on the benchtop, I know precisely the number of individual atoms and molecules that constitute that stuff.
Avogadro's number is thus the link between the micro world of atoms and molecules, about which we can only conceive, with the macro world of grams, and kilograms, and litres, that we can measure practically.
Back to your question. If there are NA, 1 mole of titanium atoms, there is a mass of 47.87g (from where did I get that mass?). What is the mass of 0.075mol of titanium metal?