2019 RWC Stadium Capacities

This week I have been working with Angela, on the 2019 RWC Stadium Capacities DLO. Before we started our DLO's, we were able to work in peers or in a Trio. As a class we were able to choose, a question that was solved in our Maths books. We chose 49,970 of 3/4 question. How we solved this problem: 49,970 ፥ 4 = 12,493.5 then 12,493 + .5 = 12,494 x 3 = 37,478 (that's how we got our answer) .. The question was (If International Stadium Yokohama only half filled. How many spare seats would there be)?