How to perform multiplication operations on different types of data

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Gorgeous dividing line
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Gorgeous dividing line
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I am a beginner
Recently, I am learning from the official tutorial
Learned: ‘Automatic Pathfinding System’
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The first two images are from the official tutorial
The last picture is mine

Why is my pin different from the official tutorial? :sob:

I just want to do a multiplication ( vector multiply float )