Wiktionary
think through
vb. To fully consider an action, and understand all its consequences.
Usage examples of "think through".
She could hardly think through the torrent of dread he was projecting.
He strove to hear and think through the pain in his head, the bewilderment.
I have summarized those reasons into ten statements so you can more carefully think through your reaction to being self-oriented or others-oriented.
She had had time to think through her first instinctive refusal of this event, and she thought she understood what must be done.
Something was wrong with that tally but before I could think through a recount, one of the hands released my arm and grabbed my assailant's biceps.