1. The problem is to multiply 3580 by 0.26. 2. The formula for multiplication is: $$a \times b = c$$ where $a = 3580$ and $b = 0.26$. 3. Multiply the numbers: $$3580 \times 0.26$$ 4. Calculate step-by-step: $$3580 \times 0.26 = 3580 \times \frac{26}{100} = \frac{3580 \times 26}{100}$$ 5. Multiply numerator: $$3580 \times 26 = 93080$$ 6. Divide by 100: $$\frac{93080}{100} = 930.8$$ 7. Therefore, the final answer is: $$3580 \times 0.26 = 930.8$$