倍 means times, -fold and is a JLPT N2 kanji. It has 10 strokes and uses the person (side) radical (亻).
Stroke order · 10 strokes
On'yomi (音読み)
バイ
Kun'yomi (訓読み)
—
Radical
亻 · person (side)
Strokes
10
How to remember 倍
The moment another person (亻) stands beside you, there are double — multiplication. 二倍 (double) — don't get sad calculating how many 倍 Tokyo rent is compared to Dhaka's.