Bomb Number

This is a fun and simple number elimination game. The goal of the game is to get bigger numbers or higher scores.
Game introduction:
At the beginning of each game you have a small hammer, which will eliminate any number on the board, the same numbers will be combined together to form a larger number. At the same time a small hammer will be added.
But you can have 5 small hammers. When the number of small hammers is 0, the game ends.
The gameplay is very simple, but it is not easy to get high scores, let's challenge it!