let multiplyTable = [];

for (let i = 1; i <= 10; i++) {
	multiplyTable[i] = [];

	for (let j = 1; j <= 10; j++) {
		multiplyTable[i][j] = j * i;
	}
}

console.log(multiplyTable[5][6]); // 30
console.log(multiplyTable[7][2]); // 14