If you still have a computer with a Pentium processor at 60, 66, 75, 90, or 100 MHz, you can reproduce this popular error. This bug, also popularly known as the Pentium FDIV bug, was a hardware bug affecting the floating-point unit (FPU) of early Intel Pentium processors. Due to this bug, the processor would return incorrect binary floating-point results when dividing certain pairs of high-precision numbers.