Yes, Emirates does serve 225,000 meals per day.
Earlier this year Business Insider reported that Emirates serves 225,000 region-specific meals to passengers every day, and although it sounds crazy, it's true. The airline has 1,800 chefs who cater for about 520 flights per day. That breaks down to 209 meals per minute. Just let that sink in. //

The airline spent over $1 billion on catering in 2018.
The number sounds staggering, but given all the stats above (see 209 meals per minute), it's actually not that hard to believe Emirates invested more than one billion dollars into the 110 millions meals they served last year.