What was the question for this implicit rationale, and corresponding answer?
Since Pogo leaves 4 prints per meter, then over 6000 meters it would leave 4 * 6000 = 24,000 footprints on the soils of Mars. Grimzi leaves 3 prints per 6 feet, or 3 / 6 = 0.5 footprints per meter. Then over 6000 meters, Grimzi leaves 0.5 * 6000 = 3000 footprints on the sands of Pluto. In total, the two creatures will leave 24,000 + 3000 = 27,000 footprints.
 The answer: 27000
The question: When Pogo, the four-legged martian, walks across the soft Martian soil, it leaves 4 footprints every meter. But Grimzi, the three-legged Plutonian, leaves only 3 footprints in the soft sands of Pluto for every 6 meters it walks. If Pogo travels 6000 meters across the soil of Mars, and Grimzi travels for 6000 meters across the fine sands of Pluto, what is the combined total number of footprints the two creatures will leave on the surfaces of their respective planets?