かければ

if [you] call (by phone), if [you] spend, if [you] wear, if [you] put on, if [you] speak to

→ かける
かけ cause (someone) trouble, inconvenience + れば Conditional (“if”)
verb Rare #44,666
if [you] call (by phone)
JA: あとで母に電話をかければ、安心すると思う。
EN: I think my mother will feel relieved if I call her later.
if [you] spend
JA: 時間をかければ、きっと上手になるよ。
EN: If you spend time on it, you’ll surely get better.
if [you] wear, if [you] put on Used with glasses.
JA: 眼鏡をかければ、黒板がよく見えるよ。
EN: If you put on your glasses, you’ll be able to see the board clearly.
if [you] speak to, if [you] call out to
JA: 先生に声をかければ、助けてくれるよ。
EN: If you speak to the teacher, they’ll help you.
Conjugation of かける
Conditional
かければ

また電話をかければいいと思う。

I think you should call again.

私さ➡ずっと石田に声かければよかったって→思ってたんだよね→

I’ve been thinking I should’ve talked to Ishida this whole time.

— 映画 聲の形 (2016)

眼鏡をかければ君の視力は矯正されるだろう。

If you wear glasses, your vision will be corrected.