Meccha Chameleon released June 10 at a reduced price of $4.79. In the first week they sold 3 million copies. That would be a bit over $14 million in revenue.
After a week the price increased to its base price of $5.99. In the span of 10 more days they have sold 7 million additional copies. That's an additional $42 million in revenue.
That would be about $56 million in revenue - but regional prices would lower that of course. The game is 45% cheaper in India for example, so it's hard to quantify how much revenue they actually created... but if it's not a worst case scenario, they should be somewhere in the $50 million range, which would already put them in the 20% cut bracket from Steam.
After the Steam cut and taxes, they could/should have earned over $20 million. That's for 2 developers working on the game. In 16 days.