How to multiply and divide via filter / lambda?

ESPHome
1

I’m using an ultrasonic sensor to measure water tank level. I measure the volt level from the sensor and each cm equals 4.125mV. In order to get the value in cm I have to divide the voltage with 4.125, then multiply with 100. I hope someone can help me with the syntax, I don’t understand the error messages I get during compile.

image

Error during compile:
Skjermbilde1

2

you’re missing the ; at the end of lambda.

3

check the syntax against the documentation for filters. Notice how the lambda line has a ; at the end.

4

That worked, thanks!!