Several identical packets form the cycle input energy. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Count packets before using energy

There are 5 packets, each worth 12 joules.

5125\cdot12
Energy packet ledgerIdentical source packets add to a checked cycle input.packetpacketpacketpacketpacketenergy

Packet energy adds to cycle input

The cycle input is 60 joules.

512=605\cdot12=60
Energy packet ledgerIdentical source packets add to a checked cycle input.packetpacketpacketpacketpacketenergy