| A | 계산 부호 | B | = | 결과 |
| 곱셈 |
| +number(POSITIVE_INFINITY 포함) | * | POSITIVE_INFINITY | = | POSITIVE_INFINITY |
| +number(POSITIVE_INFINITY 포함) | * | NEGATIVE_INFINITY | = | NEGATIVE_INFINITY |
| -number(NEGATIVE_INFINITY 포함) | * | POSITIVE_INFINITY | = | NEGATIVE_INFINITY |
| -number(NEGATIVE_INFINITY 포함) | * | NEGATIVE_INFINITY | = | POSITIVE_INFINITY |
| NEGATIVE_INFINITY | * | POSITIVE_INFINITY | = | NEGATIVE_INFINITY |
| NEGATIVE_INFINITY | * | NEGATIVE_INFINITY | = | POSITIVE_INFINITY |
| 0 | * | POSITIVE_INFINITY | = | NaN |
| 0 | * | NEGATIVE_INFINITY | = | NaN |
| NaN | * | POSITIVE_INFINITY | = | NaN |
| NaN | * | NEGATIVE_INFINITY | = | NaN |
| 나눗셈 |
| POSITIVE_INFINITY | / | number(POSITIVE_INFINITY 제외) | = | POSITIVE_INFINITY |
| POSITIVE_INFINITY | / | -number(NEGATIVE_INFINITY 제외) | = | NEGATIVE_INFINITY |
| NEGATIVE_INFINITY | / | number(POSITIVE_INFINITY 제외) | = | NEGATIVE_INFINITY |
| NEGATIVE_INFINITY | / | -number(NEGATIVE_INFINITY 제외) | = | POSITIVE_INFINITY |
| POSITIVE_INFINITY | / | POSITIVE_INFINITY | = | NaN |
| POSITIVE_INFINITY | / | NEGATIVE_INFINITY | = | NaN |
| NEGATIVE_INFINITY | / | POSITIVE_INFINITY | = | NaN |
| NEGATIVE_INFINITY | / | NEGATIVE_INFINITY | = | NaN |
| number | / | POSITIVE_INFINITY | = | 0 |
| number | / | NEGATIVE_INFINITY | = | 0 |