But if it wasn't for Mr. Euler, who wrote almost 70 volumes of mathematics and had 13 children, who he apparently would dandle on his knee while he was writing, if it wasn't for Mr. Euler, there wouldn't perhaps be these invariants.
Pero si no hubiera sido por el Sr. Euler que escribió casi 70 volúmenes de matemáticas y tuvo 13 hijos, que al parecer mecía en sus rodillas mientras escribía, si no hubiera sido por Euler, tal vez