A proverb meaning that even an unskilled person can succeed by chance if they try often enough; repetition increases the chance of success.
新しい企画がすぐにうまくいかなくても、諦めずに続ければ下手な鉄砲も数撃てば当たる。
Even if a new project doesn't succeed right away, if you keep at it you may eventually hit the mark — even a poor shot will hit with enough tries.
応募数を増やせば受かる可能性も上がる。下手な鉄砲も数撃ちゃ当たるよ。
If you increase the number of applications, your chance of acceptance rises. Even a poor marksman will hit by firing many shots.
まずは量をこなそう。下手な鉄砲も数撃てば当たるから。
First, get a lot of practice. Even an unskilled person can succeed if they try enough times.