The circuit below has the following values for its components: ΔV1 = 4 V, ΔV2 = 11 V, R1 = 12 Ω, and R2 = 10 Ω. What is the magnitude of the current through battery ΔV1? Report your answer in units of milliamperes. For example, if your calculations produce a value of 0.123 A, first transform your units as 123 mA, then enter your answer as 123.